Opinions from J. del Hoyo et al. 2014
- 'Aburria belongs to Penelopinae'
- 'Aburria aburri belongs to Aburria'
- 'Accipitridae belongs to Accipitriformes'
- 'Accipitriformes belongs to Aves'
- 'Accipitrinae belongs to Accipitridae'
- 'Accipitrini belongs to Accipitrinae'
- 'Acryllium belongs to Numididae'
- 'Acryllium vulturinum belongs to Acryllium'
- 'Acryllium vulturinum belongs to Acryllium' according to Hardwicke 1834
- 'Aechmophorus belongs to Podicipedidae'
- 'Aegothelidae belongs to Caprimulgiformes'
- 'Aepypodius belongs to Megapodiidae'
- 'Aepypodius arfakianus belongs to Aepypodius' according to Salvadori 1877
- 'Aepypodius arfakianus belongs to Aepypodius'
- 'Aepypodius bruijnii belongs to Aepypodius' according to Oustalet 1880
- 'Aepypodius bruijnii belongs to Aepypodius'
- 'Aethia belongs to Aethiinae'
- 'Aethiinae belongs to Alcidae'
- 'Afrotis belongs to Otididae'
- 'Afrotis afra belongs to Afrotis' according to Linnaeus 1766
- 'Afrotis afra belongs to Afrotis'
- 'Afrotis afraoides belongs to Afrotis' according to Smith 1831
- 'Afrotis afraoides belongs to Afrotis'
- 'Agamia belongs to Ardeidae'
- 'Agamia agami belongs to Agamia' according to Gmelin 1789
- 'Agamia agami belongs to Agamia'
- 'Agapornis belongs to Agapornithinae'
- 'Agapornis pullarius belongs to Agapornis' according to Linnaeus 1758
- 'Agapornis pullarius belongs to Agapornis'
- 'Agapornithinae belongs to Psittacidae'
- 'Alca belongs to Alcinae'
- 'Alca antiqua is recombined as Synthliboramphus antiquus'
- 'Alca arctica is recombined as Fratercula arctica'
- 'Alca cirrhata is recombined as Fratercula cirrhata'
- 'Alca cristatella is recombined as Aethia cristatella'
- 'Alca grylle is recombined as Cepphus grylle'
- 'Alca impennis is recombined as Pinguinus impennis'
- 'Alca lomvia is recombined as Uria lomvia'
- 'Alca monocerata is recombined as Cerorhinca monocerata'
- 'Alca psittacula is recombined as Aethia psittacula'
- 'Alca pygmaea is recombined as Aethia pygmaea'
- 'Alca torda belongs to Alca'
- 'Alcedinidae belongs to Coraciiformes'
- 'Alcedininae belongs to Alcedinidae'
- 'Alcedo novaeguineae is recombined as Dacelo novaeguineae'
- 'Alcidae belongs to Lari'
- 'Alcinae belongs to Alcidae'
- 'Alectura belongs to Megapodiidae'
- 'Alectura lathami belongs to Alectura' according to Gray 1831
- 'Alectura lathami belongs to Alectura'
- 'Alle belongs to Alcinae'
- 'Alopochen belongs to Tadornini'
- 'Alopochen aegyptiaca belongs to Alopochen' according to Linnaeus 1766
- 'Alopochen aegyptiaca belongs to Alopochen'
- 'Amaurornis belongs to Rallinae'
- 'Amaurornis isabellina belongs to Amaurornis' according to Schlegel 1865
- 'Amaurornis isabellina belongs to Amaurornis'
- 'Amaurornis magnirostris belongs to Amaurornis' according to Lambert 1998
- 'Amaurornis magnirostris belongs to Amaurornis'
- 'Amaurornis marginalis belongs to Amaurornis' according to Hartlaub 1857
- 'Amaurornis marginalis belongs to Amaurornis'
- 'Amaurornis moluccana belongs to Amaurornis' according to Wallace 1865
- 'Amaurornis moluccana belongs to Amaurornis'
- 'Amazilia belongs to Trochilini'
- 'Amazilia tzacatl belongs to Amazilia' according to de la Llave 1833
- 'Amazilia tzacatl belongs to Amazilia'
- 'Amazona belongs to Arinae'
- 'Amazona autumnalis belongs to Amazona' according to Linnaeus 1758
- 'Amazona autumnalis belongs to Amazona'
- 'Amazona farinosa belongs to Amazona' according to Boddaert 1783
- 'Amazona farinosa belongs to Amazona'
- 'Amazonetta belongs to Anatini'
- 'Amazonetta brasiliensis belongs to Amazonetta' according to Gmelin 1789
- 'Amazonetta brasiliensis belongs to Amazonetta'
- 'Anas belongs to Anatini'
- 'Anas acuta belongs to Anas'
- 'Anas arborea is recombined as Dendrocygna arborea'
- 'Anas atrata is recombined as Cygnus atratus'
- 'Anas autumnalis is recombined as Dendrocygna autumnalis'
- 'Anas bahamensis belongs to Anas'
- 'Anas bicolor is recombined as Dendrocygna bicolor'
- 'Anas chlorotis belongs to Anas'
- 'Anas columbianus is recombined as Cygnus columbianus'
- 'Anas crecca belongs to Anas'
- 'Anas cygnus is recombined as Cygnus cygnus'
- 'Anas erythrophthalma is recombined as Netta erythrophthalma'
- 'Anas erythrorhyncha belongs to Anas'
- 'Anas ferruginea is recombined as Tadorna ferruginea'
- 'Anas finschi is recombined as Chenonetta finschi'
- 'Anas flavirostris belongs to Anas'
- 'Anas gambensis is recombined as Plectropterus gambensis'
- 'Anas georgica belongs to Anas' according to Gmelin 1789
- 'Anas georgica belongs to Anas'
- 'Anas gracilis belongs to Anas'
- 'Anas hybrida is recombined as Chloephaga hybrida'
- 'Anas jamaicensis is recombined as Oxyura jamaicensis'
- 'Anas laysanensis belongs to Anas'
- 'Anas leucocephala is recombined as Oxyura leucocephala'
- 'Anas lobata is recombined as Biziura lobata'
- 'Anas malacorhynchos is recombined as Hymenolaimus malacorhynchos'
- 'Anas marecula belongs to Anas'
- 'Anas melleri belongs to Anas'
- 'Anas membranaceus is recombined as Malacorhynchus membranaceus'
- 'Anas mollissima is recombined as Somateria mollissima'
- 'Anas obscura fulvigula is recombined as Anas fulvigula'
- 'Anas obscura rubripes is recombined as Anas rubripes'
- 'Anas olor is recombined as Cygnus olor'
- 'Anas picta is recombined as Chloephaga picta'
- 'Anas platyrhynchos belongs to Anas'
- 'Anas rufina is recombined as Netta rufina'
- 'Anas semipalmata is recombined as Anseranas semipalmata'
- 'Anas sibilatrix belongs to Anas' according to Poeppig 1829
- 'Anas sibilatrix is recombined as Mareca sibilatrix'
- 'Anas spectabilis is recombined as Somateria spectabilis'
- 'Anas superciliosa belongs to Anas'
- 'Anas tadorna is recombined as Tadorna tadorna'
- 'Anas tadornoides is recombined as Tadorna tadornoides'
- 'Anas theodori belongs to Anas'
- 'Anas variegata is recombined as Tadorna variegata'
- 'Anas viduata is recombined as Dendrocygna viduata'
- 'Anastomus oscitans belongs to Anastomus' according to Boddaert 1783
- 'Anatidae belongs to Anseriformes'
- 'Anatinae belongs to Anatidae'
- 'Anatini belongs to Anatinae'
- 'Anhima belongs to Anhimidae'
- 'Anhima cornuta belongs to Anhima' according to Linnaeus 1766
- 'Anhima cornuta belongs to Anhima'
- 'Anhimidae belongs to Anseriformes'
- 'Anhinga belongs to Anhingidae'
- 'Anhinga melanogaster belongs to Anhinga'
- 'Anhinga novaehollandiae belongs to Anhinga'
- 'Anhinga novaehollandiae belongs to Anhinga' according to Gould 1847
- 'Anhinga rufa belongs to Anhinga'
- 'Anhinga rufa belongs to Anhinga' according to Daudin 1802
- 'Anhingidae belongs to Suliformes'
- 'Anoinae belongs to Laridae'
- 'Anser belongs to Anserini'
- 'Anser canagicus belongs to Anser' according to Sevastianov 1802
- 'Anser canagicus belongs to Anser'
- 'Anser cygnoid belongs to Anser' according to Linnaeus 1758
- 'Anser cygnoid belongs to Anser'
- 'Anser indicus belongs to Anser' according to Latham 1790
- 'Anser indicus belongs to Anser'
- 'Anser melanopterus is recombined as Chloephaga melanoptera'
- 'Anseranas belongs to Anseranatidae'
- 'Anseranatidae belongs to Anseriformes'
- 'Anseriformes belongs to Aves'
- 'Anserinae belongs to Anatidae'
- 'Anserini belongs to Anserinae'
- 'Anthracothorax belongs to Polytminae'
- 'Anthropoides belongs to Gruinae'
- 'Anthropoides paradiseus belongs to Anthropoides' according to Lichtenstein 1793
- 'Anthropoides paradiseus belongs to Anthropoides'
- 'Anthropoides virgo belongs to Anthropoides' according to Linnaeus 1758
- 'Anthropoides virgo belongs to Anthropoides'
- 'Antigone belongs to Gruinae'
- 'Antigone rubicunda belongs to Antigone' according to Perry 1810
- 'Antigone rubicunda belongs to Antigone'
- 'Antigone vipio belongs to Antigone' according to Pallas 1811
- 'Antigone vipio belongs to Antigone'
- 'Antrostomus belongs to Caprimulginae'
- 'Antrostomus carolinensis belongs to Antrostomus' according to Gmelin 1789
- 'Antrostomus carolinensis belongs to Antrostomus'
- 'Antrostomus vociferus belongs to Antrostomus' according to Wilson 1812
- 'Antrostomus vociferus belongs to Antrostomus'
- 'Aphanapteryx belongs to Rallinae'
- 'Aphanapteryx hawkinsi is recombined as Diaphorapteryx hawkinsi'
- 'Aphrodroma belongs to Procellariidae'
- 'Aphrodroma brevirostris belongs to Aphrodroma' according to Lesson 1831
- 'Aphrodroma brevirostris belongs to Aphrodroma'
- 'Apodidae belongs to Caprimulgiformes'
- 'Apodinae belongs to Apodidae'
- 'Aptenodytes belongs to Spheniscidae'
- 'Aptenodytes antarctica is recombined as Pygoscelis antarcticus'
- 'Aptenodytes chrysocome is recombined as Eudyptes chrysocome'
- 'Aptenodytes forsteri belongs to Aptenodytes'
- 'Aptenodytes minor is recombined as Eudyptula minor'
- 'Aptenodytes papua is recombined as Pygoscelis papua'
- 'Aptenodytes patagonicus belongs to Aptenodytes'
- 'Apterornis bonasia is recombined as Aphanapteryx bonasia'
- 'Apterornis solitarius is recombined as Threskiornis solitarius'
- 'Apterygidae belongs to Struthioniformes'
- 'Apteryx belongs to Apterygidae'
- 'Apteryx australis belongs to Apteryx'
- 'Apteryx haastii belongs to Apteryx' according to Potts 1872
- 'Apteryx haastii belongs to Apteryx'
- 'Apteryx mantelli belongs to Apteryx' according to Bartlett 1851
- 'Apteryx mantelli belongs to Apteryx'
- 'Apteryx owenii belongs to Apteryx' according to Gould 1847
- 'Apteryx owenii belongs to Apteryx'
- 'Apteryx rowi belongs to Apteryx'
- 'Apteryx rowi belongs to Apteryx' according to Tennyson et al. 2003
- 'Ara belongs to Arinae'
- 'Ara macao belongs to Ara' according to Linnaeus 1758
- 'Ara macao belongs to Ara'
- 'Aramidae belongs to Gruiformes'
- 'Aramides belongs to Rallinae'
- 'Aramides saracura belongs to Aramides' according to Spix 1825
- 'Aramides saracura belongs to Aramides'
- 'Aramus belongs to Aramidae'
- 'Aratinga belongs to Arinae'
- 'Aratinga solstitialis belongs to Aratinga' according to Linnaeus 1758
- 'Aratinga solstitialis belongs to Aratinga'
- 'Ardea belongs to Ardeidae'
- 'Ardea alba belongs to Ardea'
- 'Ardea americana is recombined as Grus americana'
- 'Ardea antigone is recombined as Antigone antigone'
- 'Ardea brachyrhyncha belongs to Ardea' according to Brehm 1854
- 'Ardea brachyrhyncha belongs to Ardea'
- 'Ardea caerulea is recombined as Egretta caerulea'
- 'Ardea canadensis is recombined as Antigone canadensis'
- 'Ardea carunculata is recombined as Bugeranus carunculatus'
- 'Ardea cinerea belongs to Ardea'
- 'Ardea cocoi belongs to Ardea'
- 'Ardea exilis is recombined as Ixobrychus exilis'
- 'Ardea garzetta is recombined as Egretta garzetta'
- 'Ardea goliath belongs to Ardea' according to Cretzschmar 1827
- 'Ardea goliath belongs to Ardea'
- 'Ardea grus is recombined as Grus grus'
- 'Ardea herodias belongs to Ardea'
- 'Ardea humbloti belongs to Ardea'
- 'Ardea insignis belongs to Ardea' according to Hume 1878
- 'Ardea insignis belongs to Ardea'
- 'Ardea intermedia belongs to Ardea'
- 'Ardea lentiginosa is recombined as Botaurus lentiginosus'
- 'Ardea melanocephala belongs to Ardea' according to Vigors and Children 1826
- 'Ardea melanocephala belongs to Ardea'
- 'Ardea pacifica belongs to Ardea' according to Latham 1801
- 'Ardea pacifica belongs to Ardea'
- 'Ardea plumifera belongs to Ardea' according to Gould 1848
- 'Ardea plumifera belongs to Ardea'
- 'Ardea purpurea belongs to Ardea'
- 'Ardea sacra is recombined as Egretta sacra'
- 'Ardea stellaris is recombined as Botaurus stellaris'
- 'Ardea sumatrana belongs to Ardea' according to Raffles 1822
- 'Ardea sumatrana belongs to Ardea'
- 'Ardea thula is recombined as Egretta thula'
- 'Ardea tricolor is recombined as Egretta tricolor'
- 'Ardeidae belongs to Pelecaniformes'
- 'Ardeola belongs to Ardeidae'
- 'Ardeola ralloides belongs to Ardeola' according to Scopoli 1769
- 'Ardeola ralloides belongs to Ardeola'
- 'Ardeotis belongs to Otididae'
- 'Ardeotis arabs belongs to Ardeotis' according to Linnaeus 1758
- 'Ardeotis arabs belongs to Ardeotis'
- 'Ardeotis kori belongs to Ardeotis' according to Burchell 1822
- 'Ardeotis kori belongs to Ardeotis'
- 'Ardeotis nigriceps belongs to Ardeotis'
- 'Ardeotis nigriceps belongs to Ardeotis' according to Vigors 1831
- 'Arinae belongs to Psittacidae'
- 'Atagen ariel is recombined as Fregata ariel'
- 'Atelornis belongs to Brachypteraciidae'
- 'Atelornis pittoides belongs to Atelornis' according to Lafresnaye 1834
- 'Atelornis pittoides belongs to Atelornis'
- 'Aythyini belongs to Anatinae'
- 'Balaeniceps belongs to Balaenicipitidae'
- 'Balaeniceps rex belongs to Balaeniceps' according to Gould 1850
- 'Balaeniceps rex belongs to Balaeniceps'
- 'Balaenicipitidae belongs to Pelecaniformes'
- 'Balearica belongs to Balearicinae'
- 'Balearica pavonina belongs to Balearica' according to Linnaeus 1758
- 'Balearica pavonina belongs to Balearica'
- 'Balearica regulorum belongs to Balearica' according to Bennett 1834
- 'Balearica regulorum belongs to Balearica'
- 'Balearicinae belongs to Gruidae'
- 'Batrachostomus belongs to Podargidae'
- 'Batrachostomus auritus belongs to Batrachostomus' according to Gray 1829
- 'Batrachostomus auritus belongs to Batrachostomus'
- 'Batrachostomus septimus belongs to Batrachostomus' according to Tweeddale 1877
- 'Batrachostomus septimus belongs to Batrachostomus'
- 'Biziura belongs to Oxyurinae'
- 'Botaurus belongs to Ardeidae'
- 'Botaurus pinnatus belongs to Botaurus' according to Wagler 1829
- 'Botaurus pinnatus belongs to Botaurus'
- 'Botaurus poiciloptilus belongs to Botaurus' according to Wagler 1827
- 'Botaurus poiciloptilus belongs to Botaurus'
- 'Brachypteracias belongs to Brachypteraciidae'
- 'Brachypteracias leptosomus belongs to Brachypteracias' according to Lesson 1833
- 'Brachypteracias leptosomus belongs to Brachypteracias'
- 'Brachypteraciidae belongs to Coraciiformes'
- 'Brachyramphus belongs to Alcinae'
- 'Brachyramphus brevirostris belongs to Brachyramphus'
- 'Brachyramphus brevirostris belongs to Brachyramphus' according to Vigors 1829
- 'Brachyramphus hypoleucus is recombined as Synthliboramphus hypoleucus'
- 'Brachyramphus marmoratus belongs to Brachyramphus' according to Gmelin 1789
- 'Brachyramphus marmoratus belongs to Brachyramphus'
- 'Brachyramphus perdix belongs to Brachyramphus' according to Pallas 1811
- 'Brachyramphus perdix belongs to Brachyramphus'
- 'Bubulcus belongs to Ardeidae'
- 'Bubulcus ibis belongs to Bubulcus' according to Linnaeus 1758
- 'Bubulcus ibis belongs to Bubulcus'
- 'Bucconidae belongs to Piciformes'
- 'Bucerotidae belongs to Bucerotiformes'
- 'Bucerotiformes belongs to Aves'
- 'Bucorvus belongs to Bucerotidae'
- 'Bucorvus abyssinicus belongs to Bucorvus' according to Boddaert 1783
- 'Bucorvus abyssinicus belongs to Bucorvus'
- 'Bucorvus leadbeateri belongs to Bucorvus' according to Vigors 1825
- 'Bucorvus leadbeateri belongs to Bucorvus'
- 'Bugeranus belongs to Gruinae'
- 'Burhinidae belongs to Charadrii'
- 'Burhinus belongs to Burhinidae'
- 'Burhinus grallarius belongs to Burhinus' according to Latham 1801
- 'Burhinus grallarius belongs to Burhinus'
- 'Burhinus indicus belongs to Burhinus' according to Salvadori 1865
- 'Burhinus indicus belongs to Burhinus'
- 'Burhinus oedicnemus belongs to Burhinus' according to Linnaeus 1758
- 'Burhinus oedicnemus belongs to Burhinus'
- 'Burhinus senegalensis belongs to Burhinus' according to Swainson 1837
- 'Burhinus senegalensis belongs to Burhinus'
- 'Burhinus vermiculatus belongs to Burhinus' according to Cabanis 1868
- 'Burhinus vermiculatus belongs to Burhinus'
- 'Cacatua belongs to Cacatuini'
- 'Cacatua galerita belongs to Cacatua' according to Latham 1790
- 'Cacatua galerita belongs to Cacatua'
- 'Cacatua roseicapilla is recombined as Eolophus roseicapilla'
- 'Cacatua sulphurea belongs to Cacatua' according to Gmelin 1788
- 'Cacatua sulphurea belongs to Cacatua'
- 'Cacatuidae belongs to Psittaciformes'
- 'Cacatuinae belongs to Cacatuidae'
- 'Cacatuini belongs to Cacatuinae'
- 'Cairinini belongs to Anatinae'
- 'Calidrinae belongs to Scolopacidae'
- 'Caloramphinae belongs to Megalaimidae'
- 'Calyptorhynchinae belongs to Cacatuidae'
- 'Calyptorhynchus belongs to Calyptorhynchinae'
- 'Capitonidae belongs to Piciformes'
- 'Caprimulgidae belongs to Caprimulgiformes'
- 'Caprimulgiformes belongs to Aves'
- 'Caprimulginae belongs to Caprimulgidae'
- 'Caprimulgus belongs to Caprimulginae'
- 'Caprimulgus aegyptius belongs to Caprimulgus'
- 'Caprimulgus aegyptius belongs to Caprimulgus' according to Lichtenstein 1823
- 'Caprimulgus europaeus belongs to Caprimulgus'
- 'Caprimulgus jamaicensis is recombined as Nyctibius jamaicensis'
- 'Caprimulgus strigoides is recombined as Podargus strigoides'
- 'Carbo capillatus is recombined as Phalacrocorax capillatus'
- 'Cariamidae belongs to Cariamiformes'
- 'Cariamiformes belongs to Aves'
- 'Carpococcyx belongs to Centropodinae'
- 'Carpococcyx radiceus belongs to Carpococcyx' according to Temminck 1832
- 'Carpococcyx radiceus belongs to Carpococcyx'
- 'Casuariidae belongs to Struthioniformes'
- 'Casuariinae belongs to Casuariidae'
- 'Casuarius belongs to Casuariinae'
- 'Casuarius bennetti belongs to Casuarius'
- 'Casuarius bennetti belongs to Casuarius' according to Gould 1857
- 'Casuarius casuarius belongs to Casuarius' according to Linnaeus 1758
- 'Casuarius casuarius belongs to Casuarius'
- 'Casuarius novaehollandiae is recombined as Dromaius novaehollandiae'
- 'Casuarius unappendiculatus belongs to Casuarius' according to Blyth 1860
- 'Casuarius unappendiculatus belongs to Casuarius'
- 'Catarrhactes adeliae is recombined as Pygoscelis adeliae'
- 'Catarrhactes antipodes is recombined as Megadyptes antipodes'
- 'Catharacta belongs to Stercorariidae'
- 'Catharacta chilensis belongs to Catharacta' according to Bonaparte 1857
- 'Catharacta chilensis belongs to Catharacta'
- 'Catharacta skua belongs to Catharacta'
- 'Cathartes belongs to Cathartidae'
- 'Cathartes burrovianus belongs to Cathartes'
- 'Cathartes melambrotus belongs to Cathartes'
- 'Cathartidae belongs to Cathartiformes'
- 'Cathartiformes belongs to Aves'
- 'Centropodinae belongs to Cuculidae'
- 'Centropodini belongs to Centropodinae'
- 'Centropus belongs to Centropodini'
- 'Centropus goliath belongs to Centropus' according to Bonaparte 1850
- 'Centropus goliath belongs to Centropus'
- 'Cepphus belongs to Alcinae'
- 'Cepphus carbo belongs to Cepphus' according to Pallas 1811
- 'Cepphus carbo belongs to Cepphus'
- 'Cepphus columba belongs to Cepphus'
- 'Cereopseini belongs to Anserinae'
- 'Cereopsis belongs to Cereopseini'
- 'Cereopsis novaehollandiae belongs to Cereopsis' according to Latham 1801
- 'Cereopsis novaehollandiae belongs to Cereopsis'
- 'Cerorhinca belongs to Aethiinae'
- 'Cerylinae belongs to Alcedinidae'
- 'Ceuthmochares belongs to Cuculinae'
- 'Ceuthmochares aereus belongs to Ceuthmochares' according to Vieillot 1817
- 'Ceuthmochares aereus belongs to Ceuthmochares'
- 'Chamaepetes belongs to Penelopinae'
- 'Chamaepetes goudotii belongs to Chamaepetes' according to Lesson 1828
- 'Chamaepetes goudotii belongs to Chamaepetes'
- 'Chamaepetes unicolor belongs to Chamaepetes'
- 'Chamaepetes unicolor belongs to Chamaepetes' according to Salvin 1867
- 'Charadrii belongs to Charadriiformes'
- 'Charadriidae belongs to Charadrii'
- 'Charadriiformes belongs to Aves'
- 'Charadriinae belongs to Charadriidae'
- 'Charadrius bistriatus is recombined as Burhinus bistriatus'
- 'Chauna belongs to Anhimidae'
- 'Chauna chavaria belongs to Chauna' according to Linnaeus 1766
- 'Chauna chavaria belongs to Chauna'
- 'Chauna torquata belongs to Chauna'
- 'Chenonetta belongs to Cairinini'
- 'Chenonetta jubata belongs to Chenonetta' according to Latham 1801
- 'Chenonetta jubata belongs to Chenonetta'
- 'Chionidae belongs to Charadrii'
- 'Chionis belongs to Chionidae'
- 'Chionis minor belongs to Chionis' according to Hartlaub 1841
- 'Chionis minor belongs to Chionis'
- 'Chloephaga belongs to Tadornini'
- 'Chloephaga poliocephala belongs to Chloephaga' according to Sclater 1857
- 'Chloephaga poliocephala belongs to Chloephaga'
- 'Chloephaga rubidiceps belongs to Chloephaga'
- 'Chrysococcyx belongs to Cuculinae'
- 'Chrysococcyx caprius belongs to Chrysococcyx' according to Boddaert 1783
- 'Chrysococcyx caprius belongs to Chrysococcyx'
- 'Chrysolophus belongs to Phasianini'
- 'Chrysolophus amherstiae belongs to Chrysolophus' according to Leadbeater 1829
- 'Chrysolophus amherstiae belongs to Chrysolophus'
- 'Chrysolophus pictus belongs to Chrysolophus' according to Linnaeus 1758
- 'Chrysolophus pictus belongs to Chrysolophus'
- 'Ciconia abdimii belongs to Ciconia' according to Lichtenstein 1823
- 'Ciconia episcopus belongs to Ciconia' according to Boddaert 1783
- 'Ciconia maguari belongs to Ciconia' according to Gmelin 1789
- 'Ciconia microscelis belongs to Ciconia' according to Gray 1848
- 'Ciconia stormi belongs to Ciconia' according to Blasius 1896
- 'Ciconiidae belongs to Ciconiiformes'
- 'Ciconiiformes belongs to Aves'
- 'Circus belongs to Accipitrini'
- 'Circus approximans belongs to Circus'
- 'Circus assimilis belongs to Circus' according to Jardine and Selby 1828
- 'Circus assimilis belongs to Circus'
- 'Circus buffoni belongs to Circus' according to Gmelin 1788
- 'Circus buffoni belongs to Circus'
- 'Circus cinereus belongs to Circus'
- 'Circus macrosceles belongs to Circus'
- 'Circus macrosceles belongs to Circus' according to Newton 1863
- 'Circus maillardi belongs to Circus'
- 'Circus maurus belongs to Circus' according to Temminck 1828
- 'Circus maurus belongs to Circus'
- 'Circus melanoleucos belongs to Circus' according to Pennant 1769
- 'Circus melanoleucos belongs to Circus'
- 'Circus pygargus belongs to Circus' according to Linnaeus 1758
- 'Circus pygargus belongs to Circus'
- 'Circus ranivorus belongs to Circus' according to Daudin 1800
- 'Circus ranivorus belongs to Circus'
- 'Circus spilonotus belongs to Circus'
- 'Circus spilothorax belongs to Circus' according to Salvadori and D'Albertis 1875
- 'Circus spilothorax belongs to Circus'
- 'Cladorhynchus belongs to Recurvirostrinae'
- 'Cladorhynchus leucocephalus belongs to Cladorhynchus' according to Vieillot 1816
- 'Cladorhynchus leucocephalus belongs to Cladorhynchus'
- 'Clamator belongs to Cuculinae'
- 'Clamator glandarius belongs to Clamator' according to Linnaeus 1758
- 'Clamator glandarius belongs to Clamator'
- 'Cochlearius belongs to Ardeidae'
- 'Cochlearius cochlearius belongs to Cochlearius' according to Linnaeus 1766
- 'Cochlearius cochlearius belongs to Cochlearius'
- 'Coliidae belongs to Coliiformes'
- 'Coliiformes belongs to Aves'
- 'Colius belongs to Coliidae'
- 'Colius castanotus belongs to Colius'
- 'Colius castanotus belongs to Colius' according to Verreaux and Verreaux 1855
- 'Colius colius belongs to Colius'
- 'Colius colius belongs to Colius' according to Linnaeus 1766
- 'Colius leucocephalus belongs to Colius'
- 'Colius leucocephalus belongs to Colius' according to Reichenow 1879
- 'Colius striatus belongs to Colius'
- 'Columbidae belongs to Columbiformes'
- 'Columbiformes belongs to Aves'
- 'Columbinae belongs to Columbidae'
- 'Colymbus aalge is recombined as Uria aalge'
- 'Colymbus arcticus is recombined as Gavia arctica'
- 'Colymbus immer is recombined as Gavia immer'
- 'Colymbus pacificus is recombined as Gavia pacifica'
- 'Colymbus stellatus is recombined as Gavia stellata'
- 'Coracias belongs to Coraciidae'
- 'Coracias caudatus belongs to Coracias' according to Linnaeus 1766
- 'Coracias caudatus belongs to Coracias'
- 'Coraciidae belongs to Coraciiformes'
- 'Coraciiformes belongs to Aves'
- 'Coracopseinae belongs to Psittacidae'
- 'Coracopsis belongs to Coracopseinae'
- 'Coracopsis nigra belongs to Coracopsis' according to Linnaeus 1758
- 'Coracopsis nigra belongs to Coracopsis'
- 'Coragyps belongs to Cathartidae'
- 'Corythaeola belongs to Corythaeolinae'
- 'Corythaeola cristata belongs to Corythaeola'
- 'Corythaeola cristata belongs to Corythaeola' according to Vieillot 1816
- 'Corythaeolinae belongs to Musophagidae'
- 'Corythaixoides belongs to Criniferinae'
- 'Corythaixoides concolor belongs to Corythaixoides' according to Smith 1833
- 'Corythaixoides concolor belongs to Corythaixoides'
- 'Corythaixoides leopoldi belongs to Corythaixoides' according to Shelley 1881
- 'Corythaixoides leopoldi belongs to Corythaixoides'
- 'Corythaixoides personatus belongs to Corythaixoides' according to Ruppell 1842
- 'Corythaixoides personatus belongs to Corythaixoides'
- 'Coscoroba belongs to Cereopseini'
- 'Coscoroba coscoroba belongs to Coscoroba'
- 'Coturnicini belongs to Phasianinae'
- 'Coua belongs to Centropodinae'
- 'Cracidae belongs to Galliformes'
- 'Cracinae belongs to Cracidae'
- 'Crax belongs to Cracinae'
- 'Crax globulosa belongs to Crax'
- 'Crax globulosa belongs to Crax' according to Spix 1825
- 'Crax rubra belongs to Crax' according to Linnaeus 1758
- 'Crax rubra belongs to Crax'
- 'Crinifer belongs to Criniferinae'
- 'Crinifer piscator belongs to Crinifer'
- 'Crinifer piscator belongs to Crinifer' according to Boddaert 1783
- 'Crinifer zonurus belongs to Crinifer'
- 'Crinifer zonurus belongs to Crinifer' according to Ruppell 1835
- 'Criniferinae belongs to Musophagidae'
- 'Criniferoides belongs to Criniferinae'
- 'Criniferoides leucogaster belongs to Criniferoides' according to Ruppell 1842
- 'Criniferoides leucogaster belongs to Criniferoides'
- 'Crotophaginae belongs to Cuculidae'
- 'Crypturellus belongs to Tinamidae'
- 'Crypturellus atrocapillus belongs to Crypturellus'
- 'Crypturellus atrocapillus belongs to Crypturellus' according to Tschudi 1844
- 'Crypturellus bartletti belongs to Crypturellus' according to Sclater and Salvin 1873
- 'Crypturellus bartletti belongs to Crypturellus'
- 'Crypturellus berlepschi belongs to Crypturellus'
- 'Crypturellus berlepschi belongs to Crypturellus' according to Rothschild 1897
- 'Crypturellus boucardi belongs to Crypturellus' according to Sclater 1859
- 'Crypturellus boucardi belongs to Crypturellus'
- 'Crypturellus brevirostris belongs to Crypturellus' according to Pelzeln 1863
- 'Crypturellus brevirostris belongs to Crypturellus'
- 'Crypturellus casiquiare belongs to Crypturellus' according to Chapman 1929
- 'Crypturellus casiquiare belongs to Crypturellus'
- 'Crypturellus cinereus belongs to Crypturellus' according to Gmelin 1789
- 'Crypturellus cinereus belongs to Crypturellus'
- 'Crypturellus cinnamomeus belongs to Crypturellus'
- 'Crypturellus cinnamomeus belongs to Crypturellus' according to Lesson 1842
- 'Crypturellus duidae belongs to Crypturellus'
- 'Crypturellus duidae belongs to Crypturellus' according to Zimmer 1938
- 'Crypturellus erythropus belongs to Crypturellus'
- 'Crypturellus erythropus belongs to Crypturellus' according to Pelzeln 1863
- 'Crypturellus kerriae belongs to Crypturellus' according to Chapman 1915
- 'Crypturellus kerriae belongs to Crypturellus'
- 'Crypturellus noctivagus belongs to Crypturellus'
- 'Crypturellus noctivagus belongs to Crypturellus' according to Wied 1820
- 'Crypturellus obsoletus belongs to Crypturellus'
- 'Crypturellus obsoletus belongs to Crypturellus' according to Temminck 1815
- 'Crypturellus occidentalis belongs to Crypturellus'
- 'Crypturellus occidentalis belongs to Crypturellus' according to Salvadori 1985
- 'Crypturellus parvirostris belongs to Crypturellus' according to Wagler 1827
- 'Crypturellus parvirostris belongs to Crypturellus'
- 'Crypturellus ptaritepui belongs to Crypturellus' according to Zimmer and Phelps 1945
- 'Crypturellus ptaritepui belongs to Crypturellus'
- 'Crypturellus soui belongs to Crypturellus' according to Hermann 1783
- 'Crypturellus soui belongs to Crypturellus'
- 'Crypturellus strigulosus belongs to Crypturellus'
- 'Crypturellus strigulosus belongs to Crypturellus' according to Temminck 1815
- 'Crypturellus variegatus belongs to Crypturellus' according to Gmelin 1789
- 'Crypturellus variegatus belongs to Crypturellus'
- 'Crypturus transfasciatus is recombined as Crypturellus transfasciatus'
- 'Cuculidae belongs to Cuculiformes'
- 'Cuculiformes belongs to Aves'
- 'Cuculinae belongs to Cuculidae'
- 'Cuculus discolor is recombined as Leptosomus discolor'
- 'Cursorius belongs to Glareolidae'
- 'Cursorius cursor belongs to Cursorius' according to Latham 1787
- 'Cursorius cursor belongs to Cursorius'
- 'Cygninini is corrected as Cygnini and belongs to Anserinae'
- 'Cygnus belongs to Cygnini'
- 'Cygnus buccinator belongs to Cygnus'
- 'Cygnus melancoryphus belongs to Cygnus' according to Molina 1782
- 'Cygnus melancoryphus belongs to Cygnus'
- 'Cypseloidinae belongs to Apodidae'
- 'Dacelo belongs to Halcyoninae'
- 'Dacelo gaudichaud belongs to Dacelo' according to Quoy and Gaimard 1824
- 'Dacelo gaudichaud belongs to Dacelo'
- 'Dacelo leachii belongs to Dacelo' according to Vigors and Horsfield 1826
- 'Dacelo leachii belongs to Dacelo'
- 'Dacelo tyro belongs to Dacelo' according to Gray 1858
- 'Dacelo tyro belongs to Dacelo'
- 'Dendrocygna belongs to Dendrocygninae'
- 'Dendrocygna arcuata belongs to Dendrocygna' according to Horsfield 1824
- 'Dendrocygna arcuata belongs to Dendrocygna'
- 'Dendrocygna eytoni belongs to Dendrocygna' according to Eyton 1838
- 'Dendrocygna eytoni belongs to Dendrocygna'
- 'Dendrocygna guttata belongs to Dendrocygna' according to Schlegel 1866
- 'Dendrocygna guttata belongs to Dendrocygna'
- 'Dendrocygna javanica belongs to Dendrocygna' according to Horsfield 1821
- 'Dendrocygna javanica belongs to Dendrocygna'
- 'Dendrocygninae belongs to Anatidae'
- 'Diaphorapteryx belongs to Rallinae'
- 'Didunculus belongs to Raphinae'
- 'Didunculus strigirostris belongs to Didunculus' according to Jardine 1845
- 'Didunculus strigirostris belongs to Didunculus'
- 'Didus solitarius is recombined as Pezophaps solitaria'
- 'Diomedea demersa is recombined as Spheniscus demersus'
- 'Diomedeidae belongs to Procellariiformes'
- 'Dromadidae belongs to Lari'
- 'Dromaiinae belongs to Casuariidae'
- 'Dromaius belongs to Dromaiinae'
- 'Dromaius baudinianus belongs to Dromaius' according to Parker 1984
- 'Dromaius baudinianus belongs to Dromaius'
- 'Dromaius minor belongs to Dromaius'
- 'Dromaius minor belongs to Dromaius' according to Spencer 1906
- 'Dromas belongs to Dromadidae'
- 'Dromas ardeola belongs to Dromas' according to Paykull 1805
- 'Dromas ardeola belongs to Dromas'
- 'Ducula belongs to Raphinae'
- 'Ducula aenea belongs to Ducula' according to Linnaeus 1766
- 'Ducula aenea belongs to Ducula'
- 'Egretta belongs to Ardeidae'
- 'Egretta novaehollandiae belongs to Egretta' according to Latham 1790
- 'Egretta novaehollandiae belongs to Egretta'
- 'Egretta picata belongs to Egretta' according to Gould 1845
- 'Egretta picata belongs to Egretta'
- 'Elaninae belongs to Accipitridae'
- 'Eolophus belongs to Cacatuini'
- 'Ephippiorhynchus senegalensis belongs to Ephippiorhynchus' according to Shaw 1800
- 'Esacus belongs to Burhinidae'
- 'Esacus recurvirostris belongs to Esacus' according to Cuvier 1829
- 'Esacus recurvirostris belongs to Esacus'
- 'Eudocimus belongs to Threskiornithidae'
- 'Eudocimus ruber belongs to Eudocimus' according to Linnaeus 1758
- 'Eudocimus ruber belongs to Eudocimus'
- 'Eudromia elegans belongs to Eudromia' according to Geoffroy Saint-Hilaire 1832
- 'Eudromia formosa belongs to Eudromia' according to Lillo 1905
- 'Eudyptes belongs to Spheniscidae'
- 'Eudyptes chrysolophus belongs to Eudyptes' according to Brandt 1837
- 'Eudyptes chrysolophus belongs to Eudyptes'
- 'Eudyptes moseleyi belongs to Eudyptes' according to Matthews and Iredale 1921
- 'Eudyptes moseleyi belongs to Eudyptes'
- 'Eudyptes pachyrhynchus belongs to Eudyptes'
- 'Eudyptes robustus belongs to Eudyptes' according to Oliver 1953
- 'Eudyptes robustus belongs to Eudyptes'
- 'Eudyptes schlegeli belongs to Eudyptes'
- 'Eudyptes sclateri belongs to Eudyptes' according to Buller 1888
- 'Eudyptes sclateri belongs to Eudyptes'
- 'Eudyptula belongs to Spheniscidae'
- 'Eulabeornis belongs to Rallinae'
- 'Eulabeornis castaneoventris belongs to Eulabeornis'
- 'Eulipoa belongs to Megapodiidae'
- 'Eulipoa wallacei belongs to Eulipoa' according to Gray 1860
- 'Eulipoa wallacei belongs to Eulipoa'
- 'Eurostopodinae belongs to Columbidae'
- 'Eurypyga belongs to Eurypygidae'
- 'Eurypyga helias belongs to Eurypyga' according to Pallas 1781
- 'Eurypyga helias belongs to Eurypyga'
- 'Eurypygidae belongs to Eurypygiformes'
- 'Eurypygiformes belongs to Aves'
- 'Falco belongs to Falconini'
- 'Falco aeruginosus is recombined as Circus aeruginosus'
- 'Falco alopex belongs to Falco' according to Heuglin 1861
- 'Falco alopex belongs to Falco'
- 'Falco amurensis belongs to Falco' according to Radde 1863
- 'Falco amurensis belongs to Falco'
- 'Falco apivorus is recombined as Pernis apivorus'
- 'Falco ardosiaceus belongs to Falco'
- 'Falco berigora belongs to Falco'
- 'Falco biarmicus belongs to Falco' according to Temminck 1825
- 'Falco biarmicus belongs to Falco'
- 'Falco cherrug belongs to Falco'
- 'Falco columbarius belongs to Falco'
- 'Falco concolor belongs to Falco' according to Temminck 1825
- 'Falco concolor belongs to Falco'
- 'Falco cuvierii belongs to Falco' according to Smith 1830
- 'Falco cyaneus is recombined as Circus cyaneus'
- 'Falco deiroleucus belongs to Falco' according to Temminck 1825
- 'Falco deiroleucus belongs to Falco'
- 'Falco eleonorae belongs to Falco'
- 'Falco fasciinucha belongs to Falco' according to Reichenow and Neumann 1895
- 'Falco fasciinucha belongs to Falco'
- 'Falco femoralis belongs to Falco'
- 'Falco haliaetus is recombined as Pandion haliaetus'
- 'Falco hudsonius is recombined as Circus hudsonius'
- 'Falco hypoleucos belongs to Falco' according to Gould 1841
- 'Falco hypoleucos belongs to Falco'
- 'Falco jugger belongs to Falco' according to Gray 1834
- 'Falco jugger belongs to Falco'
- 'Falco longipennis belongs to Falco' according to Swainson 1837
- 'Falco longipennis belongs to Falco'
- 'Falco macrourus is recombined as Circus macrourus'
- 'Falco mexicanus belongs to Falco'
- 'Falco naumanni belongs to Falco'
- 'Falco novaeseelandiae belongs to Falco'
- 'Falco peregrinus belongs to Falco'
- 'Falco punctatus belongs to Falco'
- 'Falco rufigularis belongs to Falco' according to Daudin 1800
- 'Falco rufigularis belongs to Falco'
- 'Falco rupicoloides belongs to Falco' according to Smith 1829
- 'Falco rupicoloides belongs to Falco'
- 'Falco rusticolus belongs to Falco'
- 'Falco severus belongs to Falco' according to Horsfield 1821
- 'Falco severus belongs to Falco'
- 'Falco sparverius belongs to Falco'
- 'Falco subbuteo belongs to Falco'
- 'Falco subniger belongs to Falco' according to Gray 1843
- 'Falco tinnunculus belongs to Falco'
- 'Falco vespertinus belongs to Falco'
- 'Falconidae belongs to Falconiformes'
- 'Falconiformes belongs to Aves'
- 'Falconinae belongs to Falconidae'
- 'Falconini belongs to Falconinae'
- 'Florisuginae belongs to Trochilidae'
- 'Fratercula belongs to Aethiinae'
- 'Fregata belongs to Fregatidae'
- 'Fregata andrewsi belongs to Fregata'
- 'Fregata andrewsi belongs to Fregata' according to Matthews 1914
- 'Fregata magnificens belongs to Fregata'
- 'Fregatidae belongs to Suliformes'
- 'Fregetta belongs to Oceanitidae'
- 'Fregetta maoriana belongs to Fregetta' according to Mathews 1932
- 'Fregetta maoriana belongs to Fregetta'
- 'Fregetta tropica belongs to Fregetta' according to Gould 1844
- 'Fregetta tropica belongs to Fregetta'
- 'Fulica belongs to Rallinae'
- 'Fulica alai belongs to Fulica' according to Peale 1848
- 'Fulica alai belongs to Fulica'
- 'Fulica americana belongs to Fulica'
- 'Fulica ardesiaca belongs to Fulica' according to Tschudi 1843
- 'Fulica ardesiaca belongs to Fulica'
- 'Fulica armillata belongs to Fulica' according to Vieillot 1817
- 'Fulica armillata belongs to Fulica'
- 'Fulica atra belongs to Fulica'
- 'Fulica cajanea is recombined as Aramides cajaneus'
- 'Fulica cornuta belongs to Fulica' according to Bonaparte 1853
- 'Fulica cornuta belongs to Fulica'
- 'Fulica cristata belongs to Fulica'
- 'Fulica gigantea belongs to Fulica'
- 'Fulica gigantea belongs to Fulica' according to Eydoux and Souleyet 1841
- 'Fulica leucoptera belongs to Fulica' according to Vieillot 1817
- 'Fulica leucoptera belongs to Fulica'
- 'Fulica martinica is recombined as Porphyrio martinicus'
- 'Fulica newtonii belongs to Fulica'
- 'Fulica porphyrio is recombined as Porphyrio porphyrio'
- 'Fulica rufifrons belongs to Fulica' according to Philppi and Landbeck 1861
- 'Fulica rufifrons belongs to Fulica'
- 'Fulica spinosa is recombined as Jacana spinosa'
- 'Gactornis belongs to Caprimulginae'
- 'Gactornis enarratus belongs to Gactornis' according to Gray 1871
- 'Gactornis enarratus belongs to Gactornis'
- 'Galbula belongs to Galbulidae'
- 'Galbula albirostris belongs to Galbula' according to Latham 1790
- 'Galbula albirostris belongs to Galbula'
- 'Galbula ruficauda belongs to Galbula' according to Cuvier 1816
- 'Galbula ruficauda belongs to Galbula'
- 'Galbulidae belongs to Piciformes'
- 'Gallicolumba belongs to Raphinae'
- 'Gallicolumba luzonica belongs to Gallicolumba' according to Scopoli 1786
- 'Gallicolumba luzonica belongs to Gallicolumba'
- 'Galliformes belongs to Aves'
- 'Gallini belongs to Phasianinae'
- 'Gallinula olivacea is recombined as Amaurornis olivacea'
- 'Gallinula phoenicurus is recombined as Amaurornis phoenicurus'
- 'Gallirallus belongs to Rallinae'
- 'Gallirex belongs to Musophaginae'
- 'Gallirex johnstoni belongs to Gallirex' according to Sharpe 1901
- 'Gallirex porphyreolophus belongs to Gallirex' according to Vigors 1831
- 'Gavia belongs to Gaviidae'
- 'Gavia adamsii belongs to Gavia'
- 'Gavia adamsii belongs to Gavia' according to Gray 1859
- 'Gaviidae belongs to Gaviiformes'
- 'Gaviiformes belongs to Aves'
- 'Geococcyx belongs to Neomorphini'
- 'Geococcyx velox belongs to Geococcyx' according to Wagner 1836
- 'Geococcyx velox belongs to Geococcyx'
- 'Geopelia belongs to Raphinae'
- 'Geopelia cuneata belongs to Geopelia' according to Latham 1801
- 'Geopelia cuneata belongs to Geopelia'
- 'Geopelia humeralis belongs to Geopelia' according to Temminck 1821
- 'Geopelia humeralis belongs to Geopelia'
- 'Geopelia maugeus belongs to Geopelia' according to Temminck 1809
- 'Geopelia maugeus belongs to Geopelia'
- 'Geopelia placida belongs to Geopelia'
- 'Geopelia placida belongs to Geopelia' according to Gould 1844
- 'Geopelia striata belongs to Geopelia' according to Linnaeus 1766
- 'Geopelia striata belongs to Geopelia'
- 'Glareola belongs to Glareolidae'
- 'Glareola nordmanni belongs to Glareola' according to Fischer 1842
- 'Glareola nordmanni belongs to Glareola'
- 'Glareolidae belongs to Lari'
- 'Glaucidium belongs to Surniinae'
- 'Glaucis belongs to Phaethornithinae'
- 'Glaucis aeneus belongs to Glaucis' according to Lawrence 1867
- 'Glaucis aeneus belongs to Glaucis'
- 'Glaucis dohrnii belongs to Glaucis' according to Bourcier and Mulsant 1852
- 'Glaucis dohrnii belongs to Glaucis'
- 'Glaucis hirsutus belongs to Glaucis' according to Gmelin 1788
- 'Glaucis hirsutus belongs to Glaucis'
- 'Goura belongs to Raphinae'
- 'Goura cristata belongs to Goura' according to Pallas 1764
- 'Goura cristata belongs to Goura'
- 'Goura scheepmakeri belongs to Goura' according to Finsch 1876
- 'Goura scheepmakeri belongs to Goura'
- 'Goura sclaterii belongs to Goura' according to Salvadori 1876
- 'Goura sclaterii belongs to Goura'
- 'Goura victoria belongs to Goura' according to Fraser 1844
- 'Goura victoria belongs to Goura'
- 'Graculus coronatus is recombined as Microcarbo coronatus'
- 'Graculus neglectus is recombined as Phalacrocorax neglectus'
- 'Gruidae belongs to Gruiformes'
- 'Gruiformes belongs to Aves'
- 'Gruinae belongs to Gruidae'
- 'Grus belongs to Gruinae'
- 'Grus japonensis belongs to Grus' according to Muller 1776
- 'Grus japonensis belongs to Grus'
- 'Grus monacha belongs to Grus'
- 'Grus monacha belongs to Grus' according to Temminck 1835
- 'Grus nigricollis belongs to Grus' according to Przevalski 1876
- 'Grus nigricollis belongs to Grus'
- 'Guira belongs to Crotophaginae'
- 'Guira guira belongs to Guira' according to Gmelin 1788
- 'Guira guira belongs to Guira'
- 'Gulosus belongs to Phalacrocoracidae'
- 'Gulosus aristotelis belongs to Gulosus' according to Linnaeus 1761
- 'Gulosus aristotelis belongs to Gulosus'
- 'Gyginae belongs to Laridae'
- 'Gymnocrex belongs to Rallinae'
- 'Gymnocrex plumbeiventris belongs to Gymnocrex' according to Gray 1862
- 'Gymnocrex plumbeiventris belongs to Gymnocrex'
- 'Gymnocrex rosenbergii belongs to Gymnocrex' according to Schlegel 1866
- 'Gymnocrex rosenbergii belongs to Gymnocrex'
- 'Gymnocrex talaudensis belongs to Gymnocrex' according to Lambert 1998
- 'Gymnocrex talaudensis belongs to Gymnocrex'
- 'Gymnogyps belongs to Cathartidae'
- 'Gypaetinae belongs to Accipitridae'
- 'Gypini belongs to Accipitrinae'
- 'Gyps belongs to Gypini'
- 'Gyps africanus belongs to Gyps' according to Salvadori 1865
- 'Gyps africanus belongs to Gyps'
- 'Habroptila belongs to Rallinae'
- 'Habroptila wallacii belongs to Habroptila' according to Gray 1860
- 'Habroptila wallacii belongs to Habroptila'
- 'Haematopodidae belongs to Charadrii'
- 'Halcyoninae belongs to Alcedinidae'
- 'Harpactes belongs to Trogonidae'
- 'Harpactes erythrocephalus belongs to Harpactes' according to Gould 1834
- 'Harpactes erythrocephalus belongs to Harpactes'
- 'Heliopais belongs to Heliornithidae'
- 'Heliornis belongs to Heliornithidae'
- 'Heliornis fulica belongs to Heliornis' according to Boddaert 1783
- 'Heliornis fulica belongs to Heliornis'
- 'Heliornithidae belongs to Gruiformes'
- 'Hemiprocne belongs to Hemiprocnidae'
- 'Hemiprocne comata belongs to Hemiprocne' according to Temminck 1824
- 'Hemiprocne comata belongs to Hemiprocne'
- 'Hemiprocnidae belongs to Caprimulgiformes'
- 'Herpetotheres belongs to Herpetotherinae'
- 'Herpetotheres cachinnans belongs to Herpetotheres' according to Linnaeus 1758
- 'Herpetotheres cachinnans belongs to Herpetotheres'
- 'Herpetotherinae belongs to Falconidae'
- 'Heterotetrax belongs to Otididae'
- 'Heterotetrax vigorsii belongs to Heterotetrax' according to Smith 1831
- 'Heterotetrax vigorsii belongs to Heterotetrax'
- 'Himantopodinae belongs to Recurvirostridae'
- 'Himantornis belongs to Himantornithinae'
- 'Himantornis haematopus belongs to Himantornis' according to Hartlaub 1855
- 'Himantornis haematopus belongs to Himantornis'
- 'Himantornithinae belongs to Rallidae'
- 'Hydrobates belongs to Hydrobatidae'
- 'Hydrobates tethys belongs to Hydrobates' according to Bonaparte 1852
- 'Hydrobates tethys belongs to Hydrobates'
- 'Hydrobatidae belongs to Procellariiformes'
- 'Hydrocorax melanoleucos is recombined as Microcarbo melanoleucos'
- 'Hymenolaimini belongs to Anatinae'
- 'Hymenolaimus belongs to Hymenolaimini'
- 'Hypotaenidia belongs to Rallinae'
- 'Hypotaenidia insignis belongs to Hypotaenidia' according to Sclater 1880
- 'Hypotaenidia insignis belongs to Hypotaenidia'
- 'Hypotaenidia okinawae belongs to Hypotaenidia' according to Yamashina and Mano 1981
- 'Hypotaenidia okinawae belongs to Hypotaenidia'
- 'Hypotaenidia torquata belongs to Hypotaenidia' according to Linnaeus 1766
- 'Hypotaenidia torquata belongs to Hypotaenidia'
- 'Ibidorhyncha belongs to Ibidorhynchidae'
- 'Ibidorhyncha struthersii belongs to Ibidorhyncha' according to Vigors 1832
- 'Ibidorhyncha struthersii belongs to Ibidorhyncha'
- 'Ibidorhynchidae belongs to Charadrii'
- 'Ibis molucca is recombined as Threskiornis moluccus'
- 'Ieraglaucinae belongs to Strigidae'
- 'Indicator belongs to Indicatoridae'
- 'Indicator archipelagicus belongs to Indicator' according to Temminck 1832
- 'Indicator archipelagicus belongs to Indicator'
- 'Indicator exilis belongs to Indicator' according to Cassin 1856
- 'Indicator exilis belongs to Indicator'
- 'Indicator indicator belongs to Indicator' according to Sparrman 1777
- 'Indicator indicator belongs to Indicator'
- 'Indicator maculatus belongs to Indicator' according to Gray 1847
- 'Indicator maculatus belongs to Indicator'
- 'Indicator meliphilus belongs to Indicator'
- 'Indicator meliphilus belongs to Indicator' according to Oberholser 1905
- 'Indicator minor belongs to Indicator' according to Stephens 1815
- 'Indicator minor belongs to Indicator'
- 'Indicator pumilio belongs to Indicator' according to Chapin 1958
- 'Indicator pumilio belongs to Indicator'
- 'Indicator variegatus belongs to Indicator' according to Lesson 1830
- 'Indicator variegatus belongs to Indicator'
- 'Indicator willcocksi belongs to Indicator' according to Alexander 1901
- 'Indicator willcocksi belongs to Indicator'
- 'Indicator xanthonotus belongs to Indicator' according to Blyth 1842
- 'Indicator xanthonotus belongs to Indicator'
- 'Indicatoridae belongs to Piciformes'
- 'Ixobrychus belongs to Ardeidae'
- 'Ixobrychus cinnamomeus belongs to Ixobrychus' according to Gmelin 1789
- 'Ixobrychus cinnamomeus belongs to Ixobrychus'
- 'Ixobrychus dubius belongs to Ixobrychus' according to Matthews 1912
- 'Ixobrychus dubius belongs to Ixobrychus'
- 'Ixobrychus eurhythmus belongs to Ixobrychus' according to Swinhoe 1873
- 'Ixobrychus eurhythmus belongs to Ixobrychus'
- 'Ixobrychus flavicollis belongs to Ixobrychus' according to Latham 1790
- 'Ixobrychus flavicollis belongs to Ixobrychus'
- 'Ixobrychus involucris belongs to Ixobrychus' according to Vieillot 1823
- 'Ixobrychus involucris belongs to Ixobrychus'
- 'Ixobrychus minutus belongs to Ixobrychus' according to Linnaeus 1766
- 'Ixobrychus minutus belongs to Ixobrychus'
- 'Ixobrychus novaezelandiae belongs to Ixobrychus' according to Potts 1871
- 'Ixobrychus novaezelandiae belongs to Ixobrychus'
- 'Ixobrychus sinensis belongs to Ixobrychus' according to Gmelin 1789
- 'Ixobrychus sinensis belongs to Ixobrychus'
- 'Ixobrychus sturmii belongs to Ixobrychus' according to Wagler 1827
- 'Ixobrychus sturmii belongs to Ixobrychus'
- 'Jacana belongs to Jacanidae'
- 'Jacana jacana belongs to Jacana' according to Linnaeus 1766
- 'Jacana jacana belongs to Jacana'
- 'Jacanidae belongs to Scolopaci'
- 'Jynginae belongs to Picidae'
- 'Lari belongs to Charadriiformes'
- 'Laridae belongs to Lari'
- 'Larinae belongs to Laridae'
- 'Larus parasiticus is recombined as Stercorarius parasiticus'
- 'Laterallus belongs to Rallinae'
- 'Laterallus jamaicensis belongs to Laterallus' according to Gmelin 1789
- 'Laterallus jamaicensis belongs to Laterallus'
- 'Laterallus melanophaius belongs to Laterallus' according to Vieillot 1819
- 'Laterallus melanophaius belongs to Laterallus'
- 'Leipoa belongs to Megapodiidae'
- 'Leipoa ocellata belongs to Leipoa' according to Gould 1840
- 'Leipoa ocellata belongs to Leipoa'
- 'Leptoptilos crumenifer belongs to Leptoptilos' according to Lesson 1831
- 'Leptoptilos javanicus belongs to Leptoptilos' according to Horsfield 1821
- 'Leptosomidae belongs to Leptosomiformes'
- 'Leptosomiformes belongs to Aves'
- 'Leptosomus belongs to Leptosomidae'
- 'Lesbiinae belongs to Trochilidae'
- 'Lestris antarcticus is recombined as Catharacta antarctica'
- 'Lestris pomarinus is recombined as Stercorarius pomarinus'
- 'Leucocarbo belongs to Phalacrocoracidae'
- 'Leucocarbo atriceps belongs to Leucocarbo' according to King 1828
- 'Leucocarbo atriceps belongs to Leucocarbo'
- 'Leucocarbo bougainvilliorum belongs to Leucocarbo' according to Lesson 1837
- 'Leucocarbo bougainvilliorum belongs to Leucocarbo'
- 'Leucocarbo campbelli belongs to Leucocarbo' according to Filhol 1878
- 'Leucocarbo campbelli belongs to Leucocarbo'
- 'Leucocarbo chalconotus belongs to Leucocarbo' according to Gray 1845
- 'Leucocarbo chalconotus belongs to Leucocarbo'
- 'Leucocarbo colensoi belongs to Leucocarbo'
- 'Leucocarbo colensoi belongs to Leucocarbo' according to Buller 1888
- 'Leucocarbo magellanicus belongs to Leucocarbo' according to Gmelin 1789
- 'Leucocarbo magellanicus belongs to Leucocarbo'
- 'Leucocarbo onslowi belongs to Leucocarbo' according to Forbes 1893
- 'Leucocarbo onslowi belongs to Leucocarbo'
- 'Leucocarbo ranfurlyi belongs to Leucocarbo' according to Ogilvie-Grant 1901
- 'Leucocarbo ranfurlyi belongs to Leucocarbo'
- 'Leucocarbo verrucosus belongs to Leucocarbo' according to Cabanis 1875
- 'Leucocarbo verrucosus belongs to Leucocarbo'
- 'Limosinae belongs to Scolopacidae'
- 'Lophoceros belongs to Bucerotidae'
- 'Lophoceros camurus belongs to Lophoceros' according to Cassin 1857
- 'Lophoceros camurus belongs to Lophoceros'
- 'Lopholaimus belongs to Raphinae'
- 'Lopholaimus antarcticus belongs to Lopholaimus' according to Shaw 1794
- 'Lopholaimus antarcticus belongs to Lopholaimus'
- 'Lophophorini belongs to Phasianinae'
- 'Lophopsittacus belongs to Psittaculini'
- 'Lophopsittacus bensoni belongs to Lophopsittacus'
- 'Lophotibis belongs to Threskiornithidae'
- 'Lophura belongs to Phasianini'
- 'Lophura ignita belongs to Lophura' according to Shaw 1797
- 'Lophura ignita belongs to Lophura'
- 'Loriini belongs to Loriinae'
- 'Loriinidae was reranked as the subfamily Loriinae and belongs to Psittacidae'
- 'Lorius belongs to Loriini'
- 'Lorius lory belongs to Lorius' according to Linnaeus 1758
- 'Lorius lory belongs to Lorius'
- 'Lybiidae belongs to Piciformes'
- 'Lybiinae belongs to Lybiidae'
- 'Lyrurus belongs to Tetraonini'
- 'Macrocephalon belongs to Megapodiidae'
- 'Macrocephalon maleo belongs to Macrocephalon' according to Muller 1846
- 'Macrocephalon maleo belongs to Macrocephalon'
- 'Malacorhynchini belongs to Anserinae'
- 'Malacorhynchus belongs to Malacorhynchini'
- 'Mareca belongs to Anatini'
- 'Mareca castanea is recombined as Anas castanea'
- 'Mascarenachen kervazoi is recombined as Alopochen kervazoi'
- 'Megadyptes belongs to Spheniscidae'
- 'Megalaimidae belongs to Piciformes'
- 'Megalaiminae belongs to Megalaimidae'
- 'Megapodidae is corrected as Megapodiidae and belongs to Galliformes'
- 'Megapodius belongs to Megapodiidae'
- 'Megapodius bernsteinii belongs to Megapodius' according to Schlegel 1866
- 'Megapodius bernsteinii belongs to Megapodius'
- 'Megapodius cumingii belongs to Megapodius' according to Dillwyn 1853
- 'Megapodius cumingii belongs to Megapodius'
- 'Megapodius decollatus belongs to Megapodius' according to Oustalet 1878
- 'Megapodius decollatus belongs to Megapodius'
- 'Megapodius eremita belongs to Megapodius'
- 'Megapodius freycinet belongs to Megapodius' according to Gaimard 1823
- 'Megapodius freycinet belongs to Megapodius'
- 'Megapodius geelvinkianus belongs to Megapodius' according to Meyer 1874
- 'Megapodius geelvinkianus belongs to Megapodius'
- 'Megapodius laperouse belongs to Megapodius'
- 'Megapodius layardi belongs to Megapodius'
- 'Megapodius nicobariensis belongs to Megapodius' according to Blyth 1846
- 'Megapodius nicobariensis belongs to Megapodius'
- 'Megapodius pritchardii belongs to Megapodius'
- 'Megapodius reinwardt belongs to Megapodius'
- 'Megapodius reinwardt belongs to Megapodius' according to Dumont 1823
- 'Megapodius tenimberensis belongs to Megapodius' according to Sclater 1883
- 'Megapodius tenimberensis belongs to Megapodius'
- 'Melidora belongs to Halcyoninae'
- 'Melidora macrorrhina belongs to Melidora' according to Lesson 1827
- 'Melidora macrorrhina belongs to Melidora'
- 'Melopsittacini belongs to Loriinae'
- 'Melopsittacus belongs to Melopsittacini'
- 'Melopsittacus undulatus belongs to Melopsittacus' according to Shaw 1805
- 'Melopsittacus undulatus belongs to Melopsittacus'
- 'Mergini belongs to Anatinae'
- 'Meropidae belongs to Coraciiformes'
- 'Merops belongs to Meropidae'
- 'Merops apiaster belongs to Merops' according to Linnaeus 1758
- 'Merops apiaster belongs to Merops'
- 'Merops ornatus belongs to Merops' according to Latham 1801
- 'Merops ornatus belongs to Merops'
- 'Mesitornis belongs to Mesitornithidae'
- 'Mesitornis unicolor belongs to Mesitornis' according to Des Murs 1845
- 'Mesitornis unicolor belongs to Mesitornis'
- 'Mesitornis variegatus belongs to Mesitornis' according to Geoffroy Saint-Hilaire 1838
- 'Mesitornis variegatus belongs to Mesitornis'
- 'Mesitornithidae belongs to Mesitornithiformes'
- 'Mesitornithiformes belongs to Aves'
- 'Micrastur belongs to Herpetotherinae'
- 'Micrastur ruficollis belongs to Micrastur' according to Vieillot 1817
- 'Micrastur ruficollis belongs to Micrastur'
- 'Micrastur semitorquatus belongs to Micrastur' according to Vieillot 1817
- 'Micrastur semitorquatus belongs to Micrastur'
- 'Microcarbo belongs to Phalacrocoracidae'
- 'Microcarbo niger belongs to Microcarbo' according to Vieillot 1817
- 'Microcarbo niger belongs to Microcarbo'
- 'Microcarbo pygmaeus belongs to Microcarbo' according to Pallas 1773
- 'Microcarbo pygmaeus belongs to Microcarbo'
- 'Micropsitta belongs to Micropsittini'
- 'Micropsitta bruijnii belongs to Micropsitta'
- 'Micropsitta bruijnii belongs to Micropsitta' according to Salvadori 1875
- 'Micropsittini belongs to Psittaculinae'
- 'Milvago belongs to Polyborini'
- 'Momotidae belongs to Coraciiformes'
- 'Monasa belongs to Bucconidae'
- 'Monasa atra belongs to Monasa' according to Boddaert 1783
- 'Monasa atra belongs to Monasa'
- 'Monasa flavirostris belongs to Monasa' according to Strickland 1850
- 'Monasa flavirostris belongs to Monasa'
- 'Monasa morphoeus belongs to Monasa' according to Hahn and Küster 1823
- 'Monasa morphoeus belongs to Monasa'
- 'Monasa nigrifrons belongs to Monasa' according to Spix 1824
- 'Monasa nigrifrons belongs to Monasa'
- 'Monias belongs to Mesitornithidae'
- 'Monias benschi belongs to Monias'
- 'Mormon corniculata is recombined as Fratercula corniculata'
- 'Musophaga rossae belongs to Musophaga' according to Gould 1852
- 'Musophaga violacea belongs to Musophaga' according to Isert 1789
- 'Musophagidae belongs to Musophagiformes'
- 'Musophagiformes belongs to Aves'
- 'Musophaginae belongs to Musophagidae'
- 'Mycteria cinerea belongs to Mycteria' according to Raffles 1822
- 'Mycteria leucocephala belongs to Mycteria' according to Pennant 1769
- 'Myiopsitta belongs to Arinae'
- 'Myiopsitta monachus belongs to Myiopsitta' according to Boddaert 1783
- 'Myiopsitta monachus belongs to Myiopsitta'
- 'Nannopterum belongs to Phalacrocoracidae'
- 'Nannopterum auritus belongs to Nannopterum' according to Lesson 1831
- 'Nannopterum auritus belongs to Nannopterum'
- 'Nannopterum brasilianus belongs to Nannopterum' according to Gmelin 1789
- 'Nannopterum brasilianus belongs to Nannopterum'
- 'Nannopterum harrisi belongs to Nannopterum' according to Rothschild 1898
- 'Nannopterum harrisi belongs to Nannopterum'
- 'Necropsittacus belongs to Psittaculini'
- 'Neomorphini belongs to Crotophaginae'
- 'Neophema belongs to Platycercinae'
- 'Neophema chrysogaster belongs to Neophema' according to Latham 1790
- 'Neophema chrysogaster belongs to Neophema'
- 'Nestor belongs to Nestorinae'
- 'Nestor notabilis belongs to Nestor'
- 'Nestorinae belongs to Strigopidae'
- 'Netta belongs to Aythyini'
- 'Netta peposaca belongs to Netta' according to Vieillot 1816
- 'Netta peposaca belongs to Netta'
- 'Nettapus belongs to Cairinini'
- 'Nettapus auritus belongs to Nettapus' according to Boddaert 1783
- 'Nettapus auritus belongs to Nettapus'
- 'Nettapus coromandelianus belongs to Nettapus' according to Gmelin 1789
- 'Nettapus coromandelianus belongs to Nettapus'
- 'Nettapus pulchellus belongs to Nettapus' according to Gould 1842
- 'Nettapus pulchellus belongs to Nettapus'
- 'Nipponia belongs to Threskiornithidae'
- 'Nipponia nippon belongs to Nipponia' according to Temminck 1835
- 'Nipponia nippon belongs to Nipponia'
- 'Nothocercus belongs to Tinamidae'
- 'Nothocercus bonapartei belongs to Nothocercus'
- 'Nothocercus bonapartei belongs to Nothocercus' according to Gray 1867
- 'Nothocercus julius belongs to Nothocercus'
- 'Nothocercus julius belongs to Nothocercus' according to Bonaparte 1854
- 'Nothocercus nigrocapillus belongs to Nothocercus'
- 'Nothocercus nigrocapillus belongs to Nothocercus' according to Gray 1867
- 'Nothoprocta cinerascens belongs to Nothoprocta' according to Burmeister 1860
- 'Nothoprocta curvirostris belongs to Nothoprocta' according to Sclater and Salvin 1873
- 'Nothoprocta ornata belongs to Nothoprocta' according to Gray 1867
- 'Nothoprocta pentlandii belongs to Nothoprocta' according to Gray 1867
- 'Nothoprocta perdicaria belongs to Nothoprocta' according to Kittlitz 1830
- 'Nothoprocta taczanowskii belongs to Nothoprocta' according to Sclater and Salvin 1875
- 'Nothura boraquira belongs to Nothura' according to Spix 1825
- 'Nothura chacoensis belongs to Nothura' according to Conover 1937
- 'Nothura maculosa belongs to Nothura' according to Temminck 1815
- 'Nothura minor belongs to Nothura' according to Spix 1825
- 'Notornis hochstetteri is recombined as Porphyrio hochstetteri'
- 'Numeniinae belongs to Scolopacidae'
- 'Numididae belongs to Galliformes'
- 'Nyctibiidae belongs to Caprimulgiformes'
- 'Nyctibius belongs to Nyctibiidae'
- 'Nyctibius aethereus belongs to Nyctibius' according to Wied 1820
- 'Nyctibius aethereus belongs to Nyctibius'
- 'Nyctibius grandis belongs to Nyctibius'
- 'Nyctibius grandis belongs to Nyctibius' according to Gmelin 1789
- 'Nyctibius griseus belongs to Nyctibius' according to Gmelin 1789
- 'Nyctibius griseus belongs to Nyctibius'
- 'Nymphicinae belongs to Cacatuidae'
- 'Nymphicus belongs to Nymphicinae'
- 'Nymphicus hollandicus belongs to Nymphicus' according to Kerr 1792
- 'Nymphicus hollandicus belongs to Nymphicus'
- 'Oceanitidae belongs to Procellariiformes'
- 'Odontophoridae was reranked as the subfamily Odontophorinae and belongs to Odontophoridae'
- 'Odontophoridae belongs to Galliformes'
- 'Odontophorus belongs to Odontophorinae'
- 'Odontophorus capueira belongs to Odontophorus' according to Spix 1825
- 'Odontophorus capueira belongs to Odontophorus'
- 'Odontophorus columbianus belongs to Odontophorus' according to Gould 1850
- 'Odontophorus columbianus belongs to Odontophorus'
- 'Oedicnemus capensis is recombined as Burhinus capensis'
- 'Oedicnemus magnirostris is recombined as Esacus magnirostris'
- 'Oedicnemus superciliaris is recombined as Burhinus superciliaris'
- 'Onychoprion belongs to Sterninae'
- 'Onychoprion anaethetus belongs to Onychoprion' according to Scopoli 1786
- 'Onychoprion anaethetus belongs to Onychoprion'
- 'Opisthocomidae belongs to Opisthocomiformes'
- 'Opisthocomiformes belongs to Aves'
- 'Opisthocomus belongs to Opisthocomidae'
- 'Opisthocomus hoazin belongs to Opisthocomus' according to Muller 1776
- 'Opisthocomus hoazin belongs to Opisthocomus'
- 'Oreophasinae belongs to Cracidae'
- 'Oreophasis belongs to Oreophasinae'
- 'Oreophasis derbianus belongs to Oreophasis' according to Gray 1844
- 'Oreophasis derbianus belongs to Oreophasis'
- 'Ortalis belongs to Ortalisinae'
- 'Ortalis canicollis belongs to Ortalis' according to Wagler 1830
- 'Ortalis canicollis belongs to Ortalis'
- 'Ortalis cinereiceps belongs to Ortalis' according to Gray 1867
- 'Ortalis cinereiceps belongs to Ortalis'
- 'Ortalis motmot belongs to Ortalis' according to Linnaeus 1766
- 'Ortalis motmot belongs to Ortalis'
- 'Ortalis superciliaris belongs to Ortalis' according to Gray 1867
- 'Ortalis superciliaris belongs to Ortalis'
- 'Ortalisinae belongs to Cracidae'
- 'Orthorhyncus belongs to Trochilini'
- 'Ortyx guttata is recombined as Odontophorus guttatus'
- 'Otididae belongs to Otidiformes'
- 'Otidiformes belongs to Aves'
- 'Oxyura belongs to Oxyurinae'
- 'Oxyura australis belongs to Oxyura' according to Gould 1836
- 'Oxyura australis belongs to Oxyura'
- 'Oxyura ferruginea belongs to Oxyura' according to Eyton 1838
- 'Oxyura ferruginea belongs to Oxyura'
- 'Oxyura maccoa belongs to Oxyura'
- 'Oxyura maccoa belongs to Oxyura' according to Eyton 1838
- 'Oxyura vittata belongs to Oxyura' according to Philippi 1860
- 'Oxyura vittata belongs to Oxyura'
- 'Oxyurinae belongs to Anatidae'
- 'Pandion belongs to Pandionidae'
- 'Pandionidae belongs to Accipitriformes'
- 'Papasula belongs to Sulidae'
- 'Pareudiastes belongs to Rallinae'
- 'Pareudiastes pacificus belongs to Pareudiastes' according to Hartlaub and Finsch 1871
- 'Pareudiastes pacificus belongs to Pareudiastes'
- 'Pareudiastes silvestris belongs to Pareudiastes' according to Mayr 1933
- 'Pareudiastes silvestris belongs to Pareudiastes'
- 'Passeriformes belongs to Aves'
- 'Patagoninae belongs to Trochilidae'
- 'Pavo belongs to Pavonini'
- 'Pavo cristatus belongs to Pavo' according to Linnaeus 1758
- 'Pavo cristatus belongs to Pavo'
- 'Pavo muticus belongs to Pavo'
- 'Pavonini belongs to Phasianinae'
- 'Pedionomidae belongs to Scolopaci'
- 'Pelecanidae belongs to Pelecaniformes'
- 'Pelecaniformes belongs to Aves'
- 'Pelecanus belongs to Pelecanidae'
- 'Pelecanus africanus is recombined as Microcarbo africanus'
- 'Pelecanus aquilus is recombined as Fregata aquila'
- 'Pelecanus capensis is recombined as Phalacrocorax capensis'
- 'Pelecanus carbo is recombined as Phalacrocorax carbo'
- 'Pelecanus carunculatus is recombined as Leucocarbo carunculatus'
- 'Pelecanus minor is recombined as Fregata minor'
- 'Pelecanus punctatus is recombined as Phalacrocorax punctatus'
- 'Pelecanus thagus belongs to Pelecanus' according to Molina 1782
- 'Pelecanus thagus belongs to Pelecanus'
- 'Pelecanus varius is recombined as Phalacrocorax varius'
- 'Penelope belongs to Penelopinae'
- 'Penelope argyrotis belongs to Penelope' according to Bonaparte 1856
- 'Penelope argyrotis belongs to Penelope'
- 'Penelope barbata belongs to Penelope' according to Chapman 1921
- 'Penelope barbata belongs to Penelope'
- 'Penelope leucogastra is recombined as Ortalis leucogastra'
- 'Penelope marail belongs to Penelope' according to Müller 1776
- 'Penelope marail belongs to Penelope'
- 'Penelope montagnii belongs to Penelope' according to Bonaparte 1856
- 'Penelope montagnii belongs to Penelope'
- 'Penelope ortoni belongs to Penelope' according to Salvin 1874
- 'Penelope ortoni belongs to Penelope'
- 'Penelope superciliaris belongs to Penelope' according to Temminck 1815
- 'Penelope superciliaris belongs to Penelope'
- 'Penelope vetula is recombined as Ortalis vetula'
- 'Penelopina belongs to Penelopinae'
- 'Penelopina nigra belongs to Penelopina' according to Fraser 1852
- 'Penelopina nigra belongs to Penelopina'
- 'Penelopinae belongs to Cracidae'
- 'Peristerinae belongs to Columbidae'
- 'Pernis belongs to Gypaetinae'
- 'Pezophaps belongs to Raphinae'
- 'Phaethon belongs to Phaethontidae'
- 'Phaethon aethereus belongs to Phaethon'
- 'Phaethon lepturus belongs to Phaethon'
- 'Phaethon rubricauda belongs to Phaethon'
- 'Phaethontes was reranked as the order Phaethontiformes and belongs to Aves'
- 'Phaethontidae belongs to Phaethontiformes'
- 'Phaethornithinae belongs to Trochilidae'
- 'Phalacrocoracidae belongs to Suliformes'
- 'Phalacrocorax belongs to Phalacrocoracidae'
- 'Phalacrocorax featherstoni belongs to Phalacrocorax'
- 'Phalacrocorax fuscescens belongs to Phalacrocorax' according to Vieillot 1817
- 'Phalacrocorax fuscescens belongs to Phalacrocorax'
- 'Phalacrocorax fuscicollis belongs to Phalacrocorax' according to Stephens 1826
- 'Phalacrocorax fuscicollis belongs to Phalacrocorax'
- 'Phalacrocorax nigrogularis belongs to Phalacrocorax' according to Ogilvie-Grant and Forbes 1899
- 'Phalacrocorax nigrogularis belongs to Phalacrocorax'
- 'Phalacrocorax perspicillatus belongs to Phalacrocorax'
- 'Phalacrocorax sulcirostris belongs to Phalacrocorax' according to Brandt 1837
- 'Phalacrocorax sulcirostris belongs to Phalacrocorax'
- 'Phalcoboenus belongs to Polyborini'
- 'Phalcoboenus chimango belongs to Phalcoboenus' according to Vieillot 1816
- 'Phalcoboenus chimango belongs to Phalcoboenus'
- 'Pharomachrus belongs to Trogonidae'
- 'Pharomachrus mocinno belongs to Pharomachrus' according to de la Llave 1832
- 'Pharomachrus mocinno belongs to Pharomachrus'
- 'Phasianidae belongs to Galliformes'
- 'Phasianinae belongs to Phasianidae'
- 'Phasianini belongs to Phasianinae'
- 'Phodilinae belongs to Tytonidae'
- 'Phodilus belongs to Phodilinae'
- 'Phodilus assimilis belongs to Phodilus' according to Hume 1877
- 'Phodilus assimilis belongs to Phodilus'
- 'Phodilus badius belongs to Phodilus' according to Horsfield 1821
- 'Phodilus badius belongs to Phodilus'
- 'Phodilus prigoginei belongs to Phodilus' according to Schouteden 1952
- 'Phodilus prigoginei belongs to Phodilus'
- 'Phoebastria belongs to Diomedeidae'
- 'Phoebastria irrorata belongs to Phoebastria' according to Salvin 1883
- 'Phoebastria irrorata belongs to Phoebastria'
- 'Phoebetria belongs to Diomedeidae'
- 'Phoebetria palpebrata belongs to Phoebetria' according to Forster 1785
- 'Phoebetria palpebrata belongs to Phoebetria'
- 'Phoeniconaias belongs to Phoenicopteridae'
- 'Phoenicoparrus belongs to Phoenicopteridae'
- 'Phoenicoparrus andinus belongs to Phoenicoparrus' according to Philippi 1854
- 'Phoenicoparrus andinus belongs to Phoenicoparrus'
- 'Phoenicoparrus jamesi belongs to Phoenicoparrus' according to Sclater 1886
- 'Phoenicoparrus jamesi belongs to Phoenicoparrus'
- 'Phoenicopteridae belongs to Phoenicopteriformes'
- 'Phoenicopteriformes belongs to Aves'
- 'Phoenicopterus belongs to Phoenicopteridae'
- 'Phoenicopterus chilensis belongs to Phoenicopterus' according to Molina 1782
- 'Phoenicopterus chilensis belongs to Phoenicopterus'
- 'Phoenicopterus minor is recombined as Phoeniconaias minor'
- 'Phoenicopterus roseus belongs to Phoenicopterus'
- 'Phoenicopterus ruber belongs to Phoenicopterus'
- 'Phoeniculidae belongs to Bucerotiformes'
- 'Phoeniculus belongs to Phoeniculidae'
- 'Phoeniculus bollei belongs to Phoeniculus' according to Hartlaub 1858
- 'Phoeniculus bollei belongs to Phoeniculus'
- 'Phoeniculus damarensis belongs to Phoeniculus' according to Ogilvie-Grant 1901
- 'Phoeniculus damarensis belongs to Phoeniculus'
- 'Phoeniculus purpureus belongs to Phoeniculus' according to Miller 1784
- 'Phoeniculus purpureus belongs to Phoeniculus'
- 'Phoeniculus somaliensis belongs to Phoeniculus' according to Ogilvie-Grant 1901
- 'Phoeniculus somaliensis belongs to Phoeniculus'
- 'Picidae belongs to Piciformes'
- 'Piciformes belongs to Aves'
- 'Picinae belongs to Picidae'
- 'Picumninae belongs to Picidae'
- 'Pilherodius belongs to Ardeidae'
- 'Pilherodius pileatus belongs to Pilherodius' according to Boddaert 1783
- 'Pilherodius pileatus belongs to Pilherodius'
- 'Pinguinus belongs to Alcinae'
- 'Pipile belongs to Penelopinae'
- 'Pipile pipile belongs to Pipile' according to Jacquin 1784
- 'Pipile pipile belongs to Pipile'
- 'Platalea belongs to Threskiornithidae'
- 'Platalea ajaja belongs to Platalea'
- 'Platalea alba belongs to Platalea'
- 'Platalea flavipes belongs to Platalea'
- 'Platalea leucorodia belongs to Platalea'
- 'Platalea minor belongs to Platalea' according to Temminck and Schlegel 1849
- 'Platalea minor belongs to Platalea'
- 'Platalea regia belongs to Platalea' according to Gould 1838
- 'Platalea regia belongs to Platalea'
- 'Platycercinae belongs to Psittacidae'
- 'Plautus alle is recombined as Alle alle'
- 'Plectropterus belongs to Cairinini'
- 'Plotus anhinga is recombined as Anhinga anhinga'
- 'Pluvialinae belongs to Charadriidae'
- 'Pluvianellidae belongs to Charadrii'
- 'Pluvianidae belongs to Charadrii'
- 'Plyctolophus productus is recombined as Nestor productus'
- 'Podargidae belongs to Caprimulgiformes'
- 'Podargus belongs to Podargidae'
- 'Podargus ocellatus belongs to Podargus' according to Quoy and Gaimard 1830
- 'Podargus ocellatus belongs to Podargus'
- 'Podargus papuensis belongs to Podargus' according to Quoy and Gaimard 1830
- 'Podargus papuensis belongs to Podargus'
- 'Podica belongs to Heliornithidae'
- 'Podica personata is recombined as Heliopais personatus'
- 'Podica senegalensis belongs to Podica' according to Vieillot 1817
- 'Podica senegalensis belongs to Podica'
- 'Podiceps clarkii is recombined as Aechmophorus clarkii'
- 'Podiceps occidentalis is recombined as Aechmophorus occidentalis'
- 'Podicipedidae belongs to Podicipediformes'
- 'Podicipediformes belongs to Aves'
- 'Poicephalus belongs to Psittacinae'
- 'Poicephalus senegalus belongs to Poicephalus' according to Linnaeus 1766
- 'Poicephalus senegalus belongs to Poicephalus'
- 'Poikilocarbo belongs to Phalacrocoracidae'
- 'Poikilocarbo gaimardi belongs to Poikilocarbo' according to Lesson and Garnot 1828
- 'Poikilocarbo gaimardi belongs to Poikilocarbo'
- 'Polyborini belongs to Falconinae'
- 'Polyborus chimachima is recombined as Milvago chimachima'
- 'Polyplectronini belongs to Phasianinae'
- 'Polytelis belongs to Psittaculinae'
- 'Polytelis swainsonii belongs to Polytelis' according to Desmarest 1826
- 'Polytelis swainsonii belongs to Polytelis'
- 'Polytminae belongs to Trochilidae'
- 'Porphyrio belongs to Rallinae'
- 'Porphyrio albus belongs to Porphyrio' according to White 1790
- 'Porphyrio albus belongs to Porphyrio'
- 'Porphyrio alleni belongs to Porphyrio'
- 'Porphyrio caerulescens belongs to Porphyrio' according to Selys Longchamps 1848
- 'Porphyrio caerulescens belongs to Porphyrio'
- 'Porphyrio cinereus is recombined as Amaurornis cinerea'
- 'Porphyrio flavirostris belongs to Porphyrio' according to Gmelin 1789
- 'Porphyrio flavirostris belongs to Porphyrio'
- 'Porphyrio kukwiedei belongs to Porphyrio'
- 'Porphyrio mantelli belongs to Porphyrio' according to Owen 1848
- 'Porphyrio mantelli belongs to Porphyrio'
- 'Porphyrio paepae belongs to Porphyrio'
- 'Porzana belongs to Rallinae'
- 'Porzana albicollis belongs to Porzana' according to Vieillot 1819
- 'Porzana albicollis belongs to Porzana'
- 'Porzana atra is recombined as Zapornia atra'
- 'Porzana fasciata belongs to Porzana' according to Sclater and Salvin 1868
- 'Porzana fasciata belongs to Porzana'
- 'Porzana fluminea belongs to Porzana'
- 'Porzana spiloptera belongs to Porzana' according to Durnford 1877
- 'Porzana spiloptera belongs to Porzana'
- 'Probosciger belongs to Cacatuinae'
- 'Probosciger aterrimus belongs to Probosciger' according to Gmelin 1788
- 'Probosciger aterrimus belongs to Probosciger'
- 'Procellaria grallaria is recombined as Fregetta grallaria'
- 'Procellariidae belongs to Procellariiformes'
- 'Procellariiformes belongs to Aves'
- 'Psilopogon belongs to Megalaiminae'
- 'Psilopogon haemacephalus belongs to Psilopogon' according to Müller 1776
- 'Psilopogon haemacephalus belongs to Psilopogon'
- 'Psittacellinae belongs to Psittacidae'
- 'Psittacidae belongs to Psittaciformes'
- 'Psittaciformes belongs to Aves'
- 'Psittacinae belongs to Psittacidae'
- 'Psittacula belongs to Psittaculini'
- 'Psittaculinae belongs to Psittacidae'
- 'Psittaculini belongs to Psittaculinae'
- 'Psittacus belongs to Psittacinae'
- 'Psittacus albifrons is recombined as Amazona albifrons'
- 'Psittacus banksii is recombined as Calyptorhynchus banksii'
- 'Psittacus eques is recombined as Psittacula eques'
- 'Psittacus erithacus belongs to Psittacus' according to Linnaeus 1758
- 'Psittacus erithacus belongs to Psittacus'
- 'Psittacus lathami is recombined as Calyptorhynchus lathami'
- 'Psittacus leucocephalus is recombined as Amazona leucocephala'
- 'Psittacus mauritianus is recombined as Lophopsittacus mauritianus'
- 'Psittacus meridionalis is recombined as Nestor meridionalis'
- 'Psittacus rodricanus is recombined as Necropsittacus rodricanus'
- 'Psittacus tenuirostris is recombined as Cacatua tenuirostris'
- 'Psittacus ventralis is recombined as Amazona ventralis'
- 'Psittrichas belongs to Psittrichasinae'
- 'Psittrichas fulgidus belongs to Psittrichas' according to Lesson 1830
- 'Psittrichas fulgidus belongs to Psittrichas'
- 'Psittrichasinae belongs to Psittacidae'
- 'Psophia belongs to Psophiidae'
- 'Psophia crepitans belongs to Psophia' according to Linnaeus 1758
- 'Psophia crepitans belongs to Psophia'
- 'Psophia dextralis belongs to Psophia' according to Conover 1934
- 'Psophia dextralis belongs to Psophia'
- 'Psophia leucoptera belongs to Psophia' according to Spix 1825
- 'Psophia leucoptera belongs to Psophia'
- 'Psophia obscura belongs to Psophia' according to Pelzeln 1857
- 'Psophia obscura belongs to Psophia'
- 'Psophia ochroptera belongs to Psophia' according to Pelzeln 1857
- 'Psophia ochroptera belongs to Psophia'
- 'Psophia viridis belongs to Psophia' according to Spix 1825
- 'Psophia viridis belongs to Psophia'
- 'Psophiidae belongs to Gruiformes'
- 'Pterocles belongs to Pteroclidae'
- 'Pterocles bicinctus belongs to Pterocles'
- 'Pterocles bicinctus belongs to Pterocles' according to Temminck 1815
- 'Pterocles burchelli belongs to Pterocles' according to Sclater 1922
- 'Pterocles coronatus belongs to Pterocles' according to Luchtenstein 1823
- 'Pterocles decoratus belongs to Pterocles'
- 'Pterocles decoratus belongs to Pterocles' according to Cabanis 1868
- 'Pterocles exustus belongs to Pterocles' according to Temminck 1825
- 'Pterocles gutturalis belongs to Pterocles' according to Smith 1836
- 'Pterocles indicus belongs to Pterocles' according to Gmelin 1789
- 'Pterocles indicus belongs to Pterocles'
- 'Pterocles lichtensteinii belongs to Pterocles' according to Temminck 1825
- 'Pterocles lichtensteinii belongs to Pterocles'
- 'Pterocles namaqua belongs to Pterocles' according to Gmelin 1789
- 'Pterocles quadricinctus belongs to Pterocles'
- 'Pterocles quadricinctus belongs to Pterocles' according to Temminck 1815
- 'Pterocles senegallus belongs to Pterocles' according to Linnaeus 1771
- 'Pteroclidae belongs to Pterocliformes'
- 'Pterocliformes belongs to Aves'
- 'Pterodroma belongs to Procellariidae'
- 'Pterodroma incerta belongs to Pterodroma' according to Schlegel 1863
- 'Pterodroma incerta belongs to Pterodroma'
- 'Pteroglossus belongs to Ramphastidae'
- 'Pteroglossus bailloni belongs to Pteroglossus' according to Vieillot 1819
- 'Pteroglossus bailloni belongs to Pteroglossus'
- 'Pteroglossus humboldti belongs to Pteroglossus' according to Wagler 1827
- 'Pteroglossus humboldti belongs to Pteroglossus'
- 'Pteroglossus inscriptus belongs to Pteroglossus' according to Swainson 1822
- 'Pteroglossus inscriptus belongs to Pteroglossus'
- 'Pteroglossus torquatus belongs to Pteroglossus' according to Gmelin 1788
- 'Pteroglossus torquatus belongs to Pteroglossus'
- 'Pteroglossus viridis belongs to Pteroglossus' according to Linnaeus 1766
- 'Pteroglossus viridis belongs to Pteroglossus'
- 'Pteronetta belongs to Aythyini'
- 'Pteronetta hartlaubii belongs to Pteronetta' according to Cassin 1859
- 'Pteronetta hartlaubii belongs to Pteronetta'
- 'Ptilopachinae belongs to Odontophoridae'
- 'Ptychoramphus belongs to Aethiinae'
- 'Pygoscelis belongs to Spheniscidae'
- 'Querquedula bernieri is recombined as Anas bernieri'
- 'Rallidae belongs to Gruiformes'
- 'Rallinae belongs to Rallidae'
- 'Rallus carolinus is recombined as Porzana carolina'
- 'Rallus porzana is recombined as Porzana porzana'
- 'Rallus pusillus belongs to Rallus' according to Pallas 1776
- 'Rallus pusillus is recombined as Zapornia pusilla'
- 'Rallus tabuensis is recombined as Zapornia tabuensis'
- 'Ramphastidae belongs to Piciformes'
- 'Ramphastos belongs to Ramphastidae'
- 'Ramphastos ambiguus belongs to Ramphastos' according to Swainson 1823
- 'Ramphastos ambiguus belongs to Ramphastos'
- 'Ramphastos ariel belongs to Ramphastos' according to Vigors 1826
- 'Ramphastos ariel belongs to Ramphastos'
- 'Ramphastos brevis belongs to Ramphastos' according to Meyer de Schauensee 1945
- 'Ramphastos brevis belongs to Ramphastos'
- 'Ramphastos citreolaemus belongs to Ramphastos' according to Gould 1844
- 'Ramphastos citreolaemus belongs to Ramphastos'
- 'Ramphastos culminatus belongs to Ramphastos' according to Gould 1833
- 'Ramphastos culminatus belongs to Ramphastos'
- 'Ramphastos cuvieri belongs to Ramphastos' according to Wagler 1827
- 'Ramphastos cuvieri belongs to Ramphastos'
- 'Ramphastos dicolorus belongs to Ramphastos' according to Linnaeus 1766
- 'Ramphastos dicolorus belongs to Ramphastos'
- 'Ramphastos sulfuratus belongs to Ramphastos' according to Lesson 1830
- 'Ramphastos sulfuratus belongs to Ramphastos'
- 'Ramphastos toco belongs to Ramphastos' according to Muller 1776
- 'Ramphastos toco belongs to Ramphastos'
- 'Ramphastos tucanus belongs to Ramphastos' according to Linnaeus 1758
- 'Ramphastos tucanus belongs to Ramphastos'
- 'Ramphastos vitellinus belongs to Ramphastos' according to Lichtenstein 1823
- 'Ramphastos vitellinus belongs to Ramphastos'
- 'Raphidae was reranked as the subfamily Raphinae and belongs to Columbidae'
- 'Raphus belongs to Raphinae'
- 'Recurvirostridae belongs to Charadrii'
- 'Recurvirostrinae belongs to Recurvirostridae'
- 'Rhea belongs to Rheidae'
- 'Rhea pennata belongs to Rhea'
- 'Rhea tarapacensis belongs to Rhea' according to Chubb 1913
- 'Rhea tarapacensis belongs to Rhea'
- 'Rheidae belongs to Struthioniformes'
- 'Rhynchotus maculicollis belongs to Rhynchotus'
- 'Rhynchotus maculicollis belongs to Rhynchotus' according to Gray 1867
- 'Rhynchotus rufescens belongs to Rhynchotus'
- 'Rhynchotus rufescens belongs to Rhynchotus' according to Temminck 1815
- 'Rhynochetidae belongs to Eurypygiformes'
- 'Rhynochetos belongs to Rhynochetidae'
- 'Rhynochetos jubatus belongs to Rhynochetos' according to Verreaux and Des Murs 1860
- 'Rhynochetos jubatus belongs to Rhynochetos'
- 'Rigidipenna belongs to Podargidae'
- 'Rigidipenna inexpectata belongs to Rigidipenna' according to Cleere et al. 2007
- 'Rigidipenna inexpectata belongs to Rigidipenna'
- 'Rollulinae belongs to Phasianidae'
- 'Rostratula belongs to Rostratulidae'
- 'Rostratula australis belongs to Rostratula' according to Gould 1838
- 'Rostratula australis belongs to Rostratula'
- 'Rostratula benghalensis belongs to Rostratula' according to Linnaeus 1758
- 'Rostratula benghalensis belongs to Rostratula'
- 'Rostratulidae belongs to Scolopaci'
- 'Rynchopidae was reranked as the subfamily Rynchopinae and belongs to Laridae'
- 'Rynchops belongs to Rynchopinae'
- 'Rynchops niger belongs to Rynchops' according to Linnaeus 1758
- 'Rynchops niger belongs to Rynchops'
- 'Sagittariidae belongs to Accipitriformes'
- 'Sagittarius belongs to Sagittariidae'
- 'Sagittarius serpentarius belongs to Sagittarius'
- 'Sagittarius serpentarius belongs to Sagittarius' according to Miller 1779
- 'Sarcidiornis mauritianus is recombined as Alopochen mauritiana'
- 'Sarcoramphus belongs to Cathartidae'
- 'Sarothrura belongs to Sarothrurinae'
- 'Sarothrura affinis belongs to Sarothrura' according to Smith 1828
- 'Sarothrura affinis belongs to Sarothrura'
- 'Sarothrurinae belongs to Rallidae'
- 'Saurothera californiana is recombined as Geococcyx californianus'
- 'Scolopaci belongs to Charadriiformes'
- 'Scolopacidae belongs to Scolopaci'
- 'Scolopacinae belongs to Scolopacidae'
- 'Scolopax alba is recombined as Eudocimus albus'
- 'Scolopax guarauna is recombined as Aramus guarauna'
- 'Scopidae belongs to Pelecaniformes'
- 'Scopus belongs to Scopidae'
- 'Scopus umbretta belongs to Scopus'
- 'Semnornis belongs to Semnornithidae'
- 'Semnornis frantzii belongs to Semnornis' according to Sclater 1864
- 'Semnornis frantzii belongs to Semnornis'
- 'Semnornis ramphastinus belongs to Semnornis' according to Jardine 1855
- 'Semnornis ramphastinus belongs to Semnornis'
- 'Semnornithidae belongs to Piciformes'
- 'Setochalcis noctitherus is recombined as Antrostomus noctitherus'
- 'Somateria belongs to Mergini'
- 'Somateria fischeri belongs to Somateria' according to Brandt 1847
- 'Somateria fischeri belongs to Somateria'
- 'Spheniscidae belongs to Sphenisciformes'
- 'Sphenisciformes belongs to Aves'
- 'Spheniscus belongs to Spheniscidae'
- 'Spheniscus humboldti belongs to Spheniscus' according to Meyen 1834
- 'Spheniscus humboldti belongs to Spheniscus'
- 'Spheniscus magellanicus belongs to Spheniscus' according to Forster 1781
- 'Spheniscus magellanicus belongs to Spheniscus'
- 'Spheniscus mendiculus belongs to Spheniscus'
- 'Spheniscus mendiculus belongs to Spheniscus' according to Sundevall 1871
- 'Spizaetus belongs to Accipitrini'
- 'Spizaetus ornatus belongs to Spizaetus' according to Daudin 1800
- 'Spizaetus ornatus belongs to Spizaetus'
- 'Steatornis belongs to Steatornithidae'
- 'Steatornis caripensis belongs to Steatornis' according to Humboldt 1817
- 'Steatornis caripensis belongs to Steatornis'
- 'Steatornithidae belongs to Caprimulgiformes'
- 'Stercorariidae belongs to Lari'
- 'Stercorarius belongs to Stercorariidae'
- 'Stercorarius longicaudus belongs to Stercorarius'
- 'Stercorarius maccormicki is recombined as Catharacta maccormicki'
- 'Sterninae belongs to Laridae'
- 'Stictonetta belongs to Stictonettini'
- 'Stictonetta naevosa belongs to Stictonetta'
- 'Stictonettini belongs to Anserinae'
- 'Stiltia belongs to Glareolidae'
- 'Stiltia isabella belongs to Stiltia' according to Vieillot 1816
- 'Stiltia isabella belongs to Stiltia'
- 'Strigidae belongs to Strigiformes'
- 'Strigiformes belongs to Aves'
- 'Striginae belongs to Strigidae'
- 'Strigopidae belongs to Psittaciformes'
- 'Strigopinae belongs to Strigopidae'
- 'Strigops belongs to Strigopinae'
- 'Strigops habroptila belongs to Strigops'
- 'Strix passerina is recombined as Glaucidium passerinum'
- 'Struthio belongs to Struthionidae'
- 'Struthio americanus is recombined as Rhea americana'
- 'Struthio camelus belongs to Struthio'
- 'Struthio cucullatus is recombined as Raphus cucullatus'
- 'Struthio molybdophanes belongs to Struthio' according to Reichenow 1883
- 'Struthio molybdophanes belongs to Struthio'
- 'Struthionidae belongs to Struthioniformes'
- 'Struthioniformes belongs to Aves'
- 'Sula belongs to Sulidae'
- 'Sula abbotti is recombined as Papasula abbotti'
- 'Sula granti belongs to Sula' according to Rothschild 1902
- 'Sula granti belongs to Sula'
- 'Sula nebouxii belongs to Sula' according to Milne-Edwards 1882
- 'Sula nebouxii belongs to Sula'
- 'Sulidae belongs to Suliformes'
- 'Suliformes belongs to Aves'
- 'Surniinae belongs to Strigidae'
- 'Synthliboramphus belongs to Alcinae'
- 'Synthliboramphus craveri belongs to Synthliboramphus' according to Salvadori 1865
- 'Synthliboramphus craveri belongs to Synthliboramphus'
- 'Synthliboramphus scrippsi belongs to Synthliboramphus'
- 'Synthliboramphus scrippsi belongs to Synthliboramphus' according to Green and Arnold 1939
- 'Synthliboramphus wumizusume belongs to Synthliboramphus'
- 'Synthliboramphus wumizusume belongs to Synthliboramphus' according to Temminck 1835
- 'Syrigma belongs to Ardeidae'
- 'Syrigma sibilatrix belongs to Syrigma'
- 'Syrrhaptes tibetanus belongs to Syrrhaptes' according to Gould 1850
- 'Tachyeres belongs to Anatini'
- 'Tachyeres leucocephalus belongs to Tachyeres'
- 'Tachyeres leucocephalus belongs to Tachyeres' according to Humphrey and Thompson 1981
- 'Tachyeres patachonicus belongs to Tachyeres' according to King 1828
- 'Tachyeres patachonicus belongs to Tachyeres'
- 'Tadorna belongs to Tadornini'
- 'Tadorna cana belongs to Tadorna' according to Gmelin 1789
- 'Tadorna cana belongs to Tadorna'
- 'Tadorna cristata belongs to Tadorna' according to Kuroda 1917
- 'Tadorna cristata belongs to Tadorna'
- 'Tadornini belongs to Anatinae'
- 'Talegalla belongs to Megapodiidae'
- 'Talegalla cuvieri belongs to Talegalla' according to Lesson 1828
- 'Talegalla cuvieri belongs to Talegalla'
- 'Talegalla fuscirostris belongs to Talegalla' according to Salvadori 1877
- 'Talegalla fuscirostris belongs to Talegalla'
- 'Talegalla jobiensis belongs to Talegalla' according to Meyer 1874
- 'Talegalla jobiensis belongs to Talegalla'
- 'Tantalus aethiopicus is recombined as Threskiornis aethiopicus'
- 'Tantalus cristatus is recombined as Lophotibis cristata'
- 'Taoniscus belongs to Tinamidae'
- 'Taoniscus nanus belongs to Taoniscus' according to Temminck 1815
- 'Tauraco belongs to Musophaginae'
- 'Tauraco bannermani belongs to Tauraco' according to Bates 1923
- 'Tauraco corythaix belongs to Tauraco' according to Wagler 1827
- 'Tauraco erythrolophus belongs to Tauraco' according to Vieillot 1819
- 'Tauraco fischeri belongs to Tauraco' according to Reichenow 1878
- 'Tauraco hartlaubi belongs to Tauraco' according to Fischer and Reichenow 1884
- 'Tauraco leucolophus belongs to Tauraco' according to Heuglin 1855
- 'Tauraco leucotis belongs to Tauraco' according to Ruppell 1835
- 'Tauraco livingstonii belongs to Tauraco' according to Gray 1864
- 'Tauraco macrorhynchus belongs to Tauraco' according to Fraser 1839
- 'Tauraco persa belongs to Tauraco' according to Linnaeus 1758
- 'Tauraco ruspolii belongs to Tauraco' according to Salvadori 1896
- 'Tauraco schalowi belongs to Tauraco' according to Reichenow 1891
- 'Tauraco schuettii belongs to Tauraco' according to Cabanis 1879
- 'Tetrao tetrix is recombined as Lyrurus tetrix'
- 'Tetraonini belongs to Phasianinae'
- 'Thalassarche belongs to Diomedeidae'
- 'Thalassarche melanophris belongs to Thalassarche'
- 'Thalassarche melanophris belongs to Thalassarche' according to Temminck 1828
- 'Thalassornis belongs to Dendrocygninae'
- 'Thalassornis leuconotus belongs to Thalassornis' according to Eyson 1838
- 'Thalassornis leuconotus belongs to Thalassornis'
- 'Thinocoridae belongs to Scolopaci'
- 'Threskiornis belongs to Threskiornithidae'
- 'Threskiornis bernieri belongs to Threskiornis' according to Bonaparte 1855
- 'Threskiornis bernieri belongs to Threskiornis'
- 'Threskiornis melanocephalus belongs to Threskiornis' according to Latham 1790
- 'Threskiornis melanocephalus belongs to Threskiornis'
- 'Threskiornis spinicollis belongs to Threskiornis' according to Jameson 1835
- 'Threskiornis spinicollis belongs to Threskiornis'
- 'Threskiornithidae belongs to Pelecaniformes'
- 'Tigrisoma belongs to Ardeidae'
- 'Tigrisoma lineatum belongs to Tigrisoma' according to Boddaert 1783
- 'Tigrisoma lineatum belongs to Tigrisoma'
- 'Tinamidae belongs to Struthioniformes'
- 'Tinamotis belongs to Tinamidae'
- 'Tinamotis ingoufi belongs to Tinamotis' according to Oustalet 1890
- 'Tinamotis pentlandii belongs to Tinamotis' according to Vigors 1837
- 'Tinamus belongs to Tinamidae'
- 'Tinamus guttatus belongs to Tinamus'
- 'Tinamus guttatus belongs to Tinamus' according to Pelzeln 1863
- 'Tinamus major belongs to Tinamus' according to Gmelin 1789
- 'Tinamus major belongs to Tinamus'
- 'Tinamus osgoodi belongs to Tinamus' according to Conover 1949
- 'Tinamus osgoodi belongs to Tinamus'
- 'Tinamus solitarius belongs to Tinamus'
- 'Tinamus solitarius belongs to Tinamus' according to Vieillot 1819
- 'Tinamus tao belongs to Tinamus'
- 'Tinamus tao belongs to Tinamus' according to Temminck 1815
- 'Tinamus tataupa is recombined as Crypturellus tataupa'
- 'Tinamus undulatus is recombined as Crypturellus undulatus'
- 'Tinnunculus newtoni is recombined as Falco newtoni'
- 'Tockus belongs to Bucerotidae'
- 'Tockus damarensis belongs to Tockus' according to Shelley 1888
- 'Tockus damarensis belongs to Tockus'
- 'Tockus deckeni belongs to Tockus' according to Cabanis 1869
- 'Tockus deckeni belongs to Tockus'
- 'Tockus erythrorhynchus belongs to Tockus' according to Temminck 1823
- 'Tockus erythrorhynchus belongs to Tockus'
- 'Tockus flavirostris belongs to Tockus' according to Ruppell 1835
- 'Tockus flavirostris belongs to Tockus'
- 'Tockus jacksoni belongs to Tockus' according to Ogilvie-Grant 1891
- 'Tockus jacksoni belongs to Tockus'
- 'Tockus leucomelas belongs to Tockus' according to Lichtenstein 1842
- 'Tockus leucomelas belongs to Tockus'
- 'Tockus monteiri belongs to Tockus'
- 'Tockus monteiri belongs to Tockus' according to Hartlaub 1865
- 'Todidae belongs to Coraciiformes'
- 'Trachyphoninae belongs to Lybiidae'
- 'Tribonyx belongs to Rallinae'
- 'Tribonyx hodgenorum belongs to Tribonyx' according to Olson 1986
- 'Tribonyx hodgenorum belongs to Tribonyx'
- 'Trichoglossus belongs to Loriini'
- 'Trichoglossus haematodus belongs to Trichoglossus' according to Linnaeus 1771
- 'Trichoglossus haematodus belongs to Trichoglossus'
- 'Trichoglossus moluccanus belongs to Trichoglossus' according to Gmelin 1788
- 'Trichoglossus moluccanus belongs to Trichoglossus'
- 'Trichoglossus ornatus belongs to Trichoglossus'
- 'Trichoglossus ornatus belongs to Trichoglossus' according to Linnaeus 1758
- 'Tringinae belongs to Scolopacidae'
- 'Trochilidae belongs to Caprimulgiformes'
- 'Trochilinae belongs to Trochilidae'
- 'Trochilini belongs to Trochilinae'
- 'Trochilus belongs to Trochilini'
- 'Trochilus cristatus is recombined as Orthorhyncus cristatus'
- 'Trochilus dominicus is recombined as Anthracothorax dominicus'
- 'Trochilus polytmus belongs to Trochilus' according to Linnaeus 1758
- 'Trochilus polytmus belongs to Trochilus'
- 'Trogon belongs to Trogonidae'
- 'Trogon massena belongs to Trogon' according to Gould 1838
- 'Trogon massena belongs to Trogon'
- 'Trogon melanurus belongs to Trogon'
- 'Trogon melanurus belongs to Trogon' according to Swainson 1838
- 'Trogon violaceus belongs to Trogon' according to Gmelin 1788
- 'Trogon violaceus belongs to Trogon'
- 'Trogon viridis belongs to Trogon' according to Linnaeus 1766
- 'Trogon viridis belongs to Trogon'
- 'Trogonidae belongs to Trogoniformes'
- 'Trogoniformes belongs to Aves'
- 'Trugon belongs to Raphinae'
- 'Trugon terrestris belongs to Trugon' according to Gray 1849
- 'Trugon terrestris belongs to Trugon'
- 'Turnicidae belongs to Lari'
- 'Turtur belongs to Raphinae'
- 'Turtur chalcospilos belongs to Turtur' according to Wagler 1827
- 'Turtur chalcospilos belongs to Turtur'
- 'Tytonidae belongs to Strigiformes'
- 'Tytoninae belongs to Tytonidae'
- 'Upupa belongs to Upupidae'
- 'Upupa antaios belongs to Upupa'
- 'Upupa epops belongs to Upupa'
- 'Upupa marginata belongs to Upupa'
- 'Upupidae belongs to Bucerotiformes'
- 'Uria belongs to Alcinae'
- 'Uria aleutica is recombined as Ptychoramphus aleuticus'
- 'Uria pusilla is recombined as Aethia pusilla'
- 'Urile belongs to Phalacrocoracidae'
- 'Urile pelagicus belongs to Urile' according to Pallas 1811
- 'Urile pelagicus belongs to Urile'
- 'Urile penicillatus belongs to Urile' according to Brandt 1837
- 'Urile penicillatus belongs to Urile'
- 'Urile urile belongs to Urile' according to Gmelin 1789
- 'Urile urile belongs to Urile'
- 'Urocolius belongs to Coliidae'
- 'Urocolius indicus belongs to Urocolius'
- 'Urocolius indicus belongs to Urocolius' according to Latham 1790
- 'Urocolius macrourus belongs to Urocolius'
- 'Urocolius macrourus belongs to Urocolius' according to Linnaeus 1766
- 'Vaginalis albus is recombined as Chionis albus'
- 'Vanellinae belongs to Charadriidae'
- 'Vultur belongs to Cathartidae'
- 'Vultur atratus is recombined as Coragyps atratus'
- 'Vultur aura is recombined as Cathartes aura'
- 'Vultur californianus is recombined as Gymnogyps californianus'
- 'Vultur fulvus is recombined as Gyps fulvus'
- 'Vultur gryphus belongs to Vultur'
- 'Vultur papa is recombined as Sarcoramphus papa'
- 'Zanda belongs to Calyptorhynchinae'
- 'Zanda baudinii belongs to Zanda' according to Lear 1832
- 'Zanda baudinii belongs to Zanda'
- 'Zanda funerea belongs to Zanda' according to Shaw 1794
- 'Zanda funerea belongs to Zanda'
- 'Zanda latirostris belongs to Zanda' according to Carnaby 1948
- 'Zanda latirostris belongs to Zanda'
- 'Zapornia belongs to Rallinae'
- 'Zapornia flavirostra belongs to Zapornia' according to Swainson 1837
- 'Zapornia flavirostra belongs to Zapornia'
- 'Zapornia parva belongs to Zapornia' according to Scopoli 1769
- 'Zapornia parva belongs to Zapornia'